{"id":17782,"date":"2026-09-11T11:12:14","date_gmt":"2026-09-11T03:12:14","guid":{"rendered":"https:\/\/hanchang.com.tw\/?post_type=portfolio&#038;p=17782"},"modified":"2026-10-15T23:56:29","modified_gmt":"2026-10-15T15:56:29","slug":"high-frequency-preheater-urea-toilet-seats","status":"publish","type":"portfolio","link":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/","title":{"rendered":"High-Frequency Preheater for Urea Toilet Seats"},"content":{"rendered":"<section  class='av_textblock_section av-av_textblock-38de8658e34b1c811a7e6a2d06387eca '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/CreativeWork\" ><div class='avia_textblock hc-product-layout-block'  itemprop=\"text\" ><style>#top.postid-17782 #main main.content {width:100%;border:0;padding-right:0;float:none;}\n#top.postid-17782 .hc-product-layout {--hc-ink:#183e4a;--hc-body:#425d68;--hc-line:#dce5e7;--hc-soft:#f2f6f5;--hc-accent:#936127;color:var(--hc-body);font-size:17px;line-height:1.8;letter-spacing:0;}\n#top.postid-17782 .hc-product-layout * {box-sizing:border-box;}\n#top.postid-17782 .hc-product-layout h1,#top.postid-17782 .hc-product-layout h2,#top.postid-17782 .hc-product-layout h3 {color:var(--hc-ink);text-transform:none;letter-spacing:0;}\n#top.postid-17782 .hc-product-layout h1 {font-size:44px;line-height:1.3;font-weight:700;margin:14px 0 24px;max-width:560px;text-wrap:balance;}\n#top.postid-17782 .hc-product-layout h2 {font-size:30px;line-height:1.45;font-weight:700;margin:0 0 20px;}\n#top.postid-17782 .hc-product-layout h3 {font-size:21px;line-height:1.5;font-weight:700;margin:0 0 12px;}\n#top.postid-17782 .hc-product-layout p {margin:0 0 18px;}\n#top.postid-17782 .hc-product-layout p:empty {display:none;}\n#top.postid-17782 .hc-product-layout a {text-decoration:none;}\n#top.postid-17782 .hc-product-layout a:focus-visible,#top.postid-17782 .hc-product-layout summary:focus-visible {outline:3px solid #a46e32;outline-offset:4px;}\n#top.postid-17782 .hc-eyebrow {display:block;font-size:13px;line-height:1.5;font-weight:700;letter-spacing:.13em;color:var(--hc-accent);margin:0 0 12px;}\n#top.postid-17782 .hc-hero {display:grid;grid-template-columns:1.07fr 1fr;gap:56px;align-items:center;padding:12px 0 42px;}\n#top.postid-17782 .hc-hero-copy {min-width:0;}\n#top.postid-17782 .hc-hero .hc-product-lead {border:0;background:none;padding:0;margin:0;font-size:17px;line-height:1.85;}\n#top.postid-17782 .hc-product-tags {display:flex;gap:8px;flex-wrap:wrap;margin:0 0 20px;}\n#top.postid-17782 .hc-product-tags span {font-size:14px;color:var(--hc-ink);padding:4px 12px;background:var(--hc-soft);border-radius:3px;}\n#top.postid-17782 .hc-hero .hc-product-machine-figure {margin:0;padding:26px 28px 14px;background:#f7f9f7;border:1px solid #e2e9e4;border-radius:4px;position:relative;}\n#top.postid-17782 .hc-hero .hc-product-machine-figure img {display:block;max-width:100%;width:auto;height:450px;object-fit:contain;margin:0 auto;mix-blend-mode:multiply;}\n#top.postid-17782 .hc-hero figcaption {font-size:13px;line-height:1.6;margin-top:14px;color:#63736a;}\n#top.postid-17782 .hc-actions {display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:26px 0 0;}\n#top.postid-17782 .hc-btn {display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 24px;font-size:16px;line-height:1.5;font-weight:700;border-radius:3px;border:1px solid var(--hc-ink);background:var(--hc-ink);color:#fff;}\n#top.postid-17782 .hc-btn:hover {background:#2b5560;color:#fff;}\n#top.postid-17782 .hc-btn-secondary {background:transparent;color:var(--hc-ink);border-color:#bdcdcf;}\n#top.postid-17782 .hc-btn-secondary:hover {background:var(--hc-soft);color:var(--hc-ink);}\n#top.postid-17782 .hc-stat-band {display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--hc-line);border-bottom:1px solid var(--hc-line);padding:24px 0;margin:0 0 24px;}\n#top.postid-17782 .hc-stat {padding:0 30px;border-left:1px solid var(--hc-line);}\n#top.postid-17782 .hc-stat:first-child {border-left:0;padding-left:0;}\n#top.postid-17782 .hc-stat strong {display:block;color:var(--hc-ink);font-size:27px;line-height:1.4;margin:0 0 4px;}\n#top.postid-17782 .hc-stat span {display:block;font-size:14px;}\n#top.postid-17782 .hc-page-nav {display:flex;gap:6px 24px;flex-wrap:wrap;padding:4px 0 18px;border-bottom:1px solid var(--hc-line);}\n#top.postid-17782 .hc-page-nav a {display:block;min-height:44px;padding:10px 0;color:var(--hc-body);font-size:15px;font-weight:700;}\n#top.postid-17782 .hc-page-nav a:hover {color:var(--hc-accent);}\n#top.postid-17782 .hc-section {padding:58px 0;scroll-margin-top:110px;}\n#top.postid-17782 .hc-section + .hc-section {border-top:1px solid var(--hc-line);}\n#top.postid-17782 .hc-section-heading {max-width:760px;margin:0 0 30px;}\n#top.postid-17782 .hc-benefits {display:grid;grid-template-columns:1fr 1fr;gap:0 42px;}\n#top.postid-17782 .hc-benefit {display:grid;grid-template-columns:38px 1fr;gap:16px;padding:24px 0;border-top:1px solid var(--hc-line);}\n#top.postid-17782 .hc-benefit-index {font-size:14px;font-weight:700;color:var(--hc-accent);padding-top:4px;}\n#top.postid-17782 .hc-benefit p {font-size:16px;line-height:1.8;margin:0;}\n#top.postid-17782 .hc-investment-note {border-left:3px solid #79917c;padding:18px 24px;background:var(--hc-soft);margin:20px 0 0;}\n#top.postid-17782 .hc-investment-note p {margin:0;font-size:16px;}\n#top.postid-17782 .hc-process-grid {display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;}\n#top.postid-17782 .hc-process-copy p {font-size:16px;}\n#top.postid-17782 .hc-sequence {display:flex;flex-wrap:wrap;gap:8px;margin:0 0 22px;}\n#top.postid-17782 .hc-sequence span {padding:5px 10px;background:var(--hc-soft);font-size:14px;color:var(--hc-ink);border-radius:3px;}\n#top.postid-17782 .hc-video-link {display:block;position:relative;border:1px solid var(--hc-line);background:#173c48;overflow:hidden;border-radius:4px;}\n#top.postid-17782 .hc-video-link img {display:block;width:100%;height:auto;aspect-ratio:4\/3;object-fit:cover;opacity:.85;}\n#top.postid-17782 .hc-video-play {position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);height:62px;width:62px;display:grid;place-items:center;border-radius:50%;background:#fff;color:var(--hc-ink);font-size:22px;padding-left:4px;box-shadow:0 4px 20px #0003;}\n#top.postid-17782 .hc-video-label {display:flex;justify-content:space-between;gap:12px;margin-top:12px;font-size:15px;color:var(--hc-ink);font-weight:700;}\n#top.postid-17782 .hc-video-caption {font-size:13px;line-height:1.6;margin-top:6px;}\n#top.postid-17782 .hc-selection-grid {display:grid;grid-template-columns:1fr 1fr;gap:24px;}\n#top.postid-17782 .hc-selection-panel {background:var(--hc-soft);padding:26px 28px;border-radius:3px;}\n#top.postid-17782 .hc-selection-panel p {font-size:16px;margin:0;}\n#top.postid-17782 .hc-spec-intro {display:grid;grid-template-columns:1fr 1fr;gap:32px;}\n#top.postid-17782 .hc-spec-intro p {font-size:16px;}\n#top.postid-17782 .hc-spec-scope {font-size:14px;color:#63737b;background:#f8f9f8;padding:14px 18px;border-left:3px solid #aebdb5;}\n#top.postid-17782 .hc-spec-grid {display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;align-items:start;margin-top:24px;}\n#top.postid-17782 .hc-spec-item {border:1px solid var(--hc-line);border-radius:3px;min-width:0;scroll-margin-top:110px;}\n#top.postid-17782 .hc-spec-item summary {padding:16px 20px;font-size:17px;line-height:1.5;font-weight:700;color:var(--hc-ink);cursor:pointer;}\n#top.postid-17782 .hc-spec-item[open] summary {background:var(--hc-soft);border-bottom:1px solid var(--hc-line);}\n#top.postid-17782 .hc-spec-item table {width:100%;margin:0;border-collapse:collapse;table-layout:fixed;}\n#top.postid-17782 .hc-spec-item table td,#top.postid-17782 .hc-spec-item table th {font-size:14px;line-height:1.65;padding:10px 14px;overflow-wrap:anywhere;border:0;border-bottom:1px solid #e7ecee;color:var(--hc-body);text-align:left;}\n#top.postid-17782 .hc-spec-item table th {background:#f4f7f7;color:var(--hc-ink);font-weight:700;}\n#top.postid-17782 .hc-spec-item table td:first-child {width:48%;}\n#top.postid-17782 .hc-service-section {background:#f7f8f4;border:0;padding:32px;border-radius:4px;margin:0;}\n#top.postid-17782 .hc-service-section h2 {font-size:26px;}\n#top.postid-17782 .hc-service-section .hc-card-grid {display:grid;grid-template-columns:1fr 1fr;gap:24px 32px;margin:22px 0 0;}\n#top.postid-17782 .hc-service-section .hc-product-card {padding:0;border:0;background:none;}\n#top.postid-17782 .hc-service-section strong {display:block;font-size:18px;color:var(--hc-ink);margin-bottom:8px;}\n#top.postid-17782 .hc-service-section p {font-size:15px;line-height:1.8;margin:0;}\n#top.postid-17782 .hc-product-faq {border:0;margin:0;padding:0;}\n#top.postid-17782 .hc-product-faq details {border:1px solid var(--hc-line);border-radius:3px;background:#fff;margin:12px 0;}\n#top.postid-17782 .hc-product-faq summary {cursor:pointer;padding:18px 22px;font-size:18px;line-height:1.6;font-weight:700;color:var(--hc-ink);}\n#top.postid-17782 .hc-product-faq details[open] summary {background:var(--hc-soft);border-bottom:1px solid var(--hc-line);}\n#top.postid-17782 .hc-product-faq details p {padding:18px 22px 22px;margin:0;font-size:16px;line-height:1.85;max-width:950px;}\n#top.postid-17782 .hc-rfq-section {background:var(--hc-ink);color:#eef3f4;padding:42px 46px;border-radius:4px;scroll-margin-top:110px;}\n#top.postid-17782 .hc-rfq-section h2 {color:#fff;font-size:29px;max-width:720px;}\n#top.postid-17782 .hc-rfq-section p {max-width:800px;color:#e5eef0;font-size:16px;}\n#top.postid-17782 .hc-rfq-section .hc-eyebrow {color:#d8bc87;}\n#top.postid-17782 .hc-rfq-section .hc-btn {background:#fff;color:var(--hc-ink);border-color:#fff;}\n#top.postid-17782 .hc-rfq-section .hc-btn:hover {background:#edf2ee;}\n#top.postid-17782 .hc-gsc-discovery-links {padding:36px 0 10px;font-size:15px;line-height:1.8;}\n#top.postid-17782 .hc-gsc-discovery-links h2 {font-size:22px;}\n#top.postid-17782 .hc-gsc-discovery-links a {color:var(--hc-ink);text-decoration:underline;text-underline-offset:3px;}\n#top.postid-17782 .hc-gsc-discovery-links li {margin-bottom:10px;}\n@media(max-width:1050px){\n #top.postid-17782 .hc-hero {gap:28px;}\n #top.postid-17782 .hc-product-layout h1 {font-size:36px;}\n #top.postid-17782 .hc-hero .hc-product-machine-figure img {height:380px;}\n #top.postid-17782 .hc-stat strong {font-size:23px;}\n}\n@media(max-width:767px){\n #top.postid-17782 .hc-product-layout {font-size:16px;}\n #top.postid-17782 .hc-product-layout h1 {font-size:32px;margin:10px 0 18px;}\n #top.postid-17782 .hc-product-layout h2 {font-size:25px;}\n #top.postid-17782 .hc-product-layout h3 {font-size:19px;}\n #top.postid-17782 .hc-hero {grid-template-columns:1fr;gap:26px;padding:0 0 28px;}\n #top.postid-17782 .hc-hero .hc-product-lead {font-size:16px;line-height:1.8;}\n #top.postid-17782 .hc-hero .hc-product-machine-figure {padding:18px;}\n #top.postid-17782 .hc-hero .hc-product-machine-figure img {height:320px;}\n #top.postid-17782 .hc-actions {margin-top:20px;gap:10px;}\n #top.postid-17782 .hc-btn {padding:11px 17px;font-size:15px;}\n #top.postid-17782 .hc-stat-band {grid-template-columns:1fr;padding:0;margin-bottom:18px;}\n #top.postid-17782 .hc-stat,#top.postid-17782 .hc-stat:first-child {padding:16px 0;border-left:0;border-bottom:1px solid var(--hc-line);display:flex;align-items:center;justify-content:space-between;gap:12px;}\n #top.postid-17782 .hc-stat:last-child {border-bottom:0;}\n #top.postid-17782 .hc-stat strong {font-size:22px;margin:0;flex:0 0 auto;}\n #top.postid-17782 .hc-stat span {font-size:13px;max-width:51%;}\n #top.postid-17782 .hc-page-nav {gap:2px 20px;}\n #top.postid-17782 .hc-section {padding:38px 0;}\n #top.postid-17782 .hc-section-heading {margin-bottom:22px;}\n #top.postid-17782 .hc-benefits,#top.postid-17782 .hc-process-grid,#top.postid-17782 .hc-selection-grid,#top.postid-17782 .hc-spec-intro,#top.postid-17782 .hc-spec-grid {grid-template-columns:1fr;gap:16px;}\n #top.postid-17782 .hc-benefit {grid-template-columns:26px 1fr;gap:12px;padding:20px 0;}\n #top.postid-17782 .hc-investment-note {padding:18px;}\n #top.postid-17782 .hc-selection-panel {padding:22px;}\n #top.postid-17782 .hc-service-section {padding:24px;}\n #top.postid-17782 .hc-service-section .hc-card-grid {grid-template-columns:1fr;gap:24px;}\n #top.postid-17782 .hc-product-faq summary {font-size:17px;padding:16px 18px;}\n #top.postid-17782 .hc-product-faq details p {padding:16px 18px 20px;}\n #top.postid-17782 .hc-rfq-section {padding:30px 24px;}\n}\n#top.postid-17782 #main aside.sidebar.sidebar_right {display:none;}\n#top.postid-17782 .hc-related-equipment-grid {display:grid;grid-template-columns:1fr 1fr;gap:18px;}\n#top.postid-17782 .hc-related-equipment-card {display:block;padding:24px 26px;border:1px solid var(--hc-line);border-radius:4px;color:var(--hc-body);background:#fff;}\n#top.postid-17782 .hc-related-equipment-card:hover {border-color:#91a7a5;background:var(--hc-soft);color:var(--hc-body);}\n#top.postid-17782 .hc-related-equipment-card .hc-related-label {display:block;font-size:13px;font-weight:700;color:var(--hc-accent);margin-bottom:10px;}\n#top.postid-17782 .hc-related-equipment-card h3 {font-size:21px;margin:0 0 10px;}\n#top.postid-17782 .hc-related-equipment-card p {font-size:16px;line-height:1.8;margin:0 0 16px;}\n#top.postid-17782 .hc-related-equipment-card .hc-related-link {display:block;color:var(--hc-ink);font-size:15px;font-weight:700;}\n#top.postid-17782 .hc-related-series-link {display:inline-block;color:var(--hc-ink);font-size:15px;margin-top:22px;text-decoration:underline;text-underline-offset:4px;}\n@media(max-width:767px){\n #top.postid-17782 .hc-related-equipment-grid {grid-template-columns:1fr;gap:14px;}\n #top.postid-17782 .hc-related-equipment-card {padding:22px;}\n #top.postid-17782 .hc-related-equipment-card h3 {font-size:20px;}\n}\n#top.postid-17782 .hc-workflow-grid {display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:28px;}\n#top.postid-17782 .hc-workflow-card {padding:24px;background:var(--hc-soft);border:1px solid var(--hc-line);border-radius:4px;}\n#top.postid-17782 .hc-workflow-card ol {margin:0;padding-left:24px;}\n#top.postid-17782 .hc-workflow-card li {padding-left:5px;margin:0 0 14px;}\n#top.postid-17782 .hc-workflow-card li p {margin:4px 0 0;}\n#top.postid-17782 .hc-workflow-note {margin:22px 0 0;padding-left:18px;border-left:3px solid var(--hc-accent);}\n#top.postid-17782 .hc-purchase-note {margin:22px 0;}\n@media(max-width:767px){\n#top.postid-17782 .hc-product-layout .hc-hero h1 {font-size:28px;line-height:1.25;margin:8px 0 12px;}\n#top.postid-17782 .hc-hero .hc-product-lead {font-size:16px;line-height:1.65;}\n#top.postid-17782 .hc-hero .hc-product-lead p {margin-bottom:12px;}\n#top.postid-17782 .hc-hero .hc-product-tags {gap:6px;margin-bottom:12px;}\n#top.postid-17782 .hc-hero .hc-actions {display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}\n#top.postid-17782 .hc-hero .hc-actions .hc-btn {font-size:14px;padding:10px 12px;min-height:44px;}\n#top.postid-17782 .hc-hero {gap:18px;}\n#top.postid-17782 .hc-workflow-grid {grid-template-columns:1fr;gap:16px;}\n#top.postid-17782 .hc-workflow-card {padding:20px;}\n}\n\/* Preheater: four facts, always-visible power list, purchase options. *\/\n#top.postid-17782 .hc-product-layout .hc-stat-band{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;}\n#top.postid-17782 .hc-product-layout .hc-stat-band>.hc-stat{display:block;padding:16px;border:1px solid var(--hc-line);min-width:0;box-sizing:border-box;background:var(--hc-soft);}\n#top.postid-17782 .hc-product-layout .hc-stat strong{font-size:21px;line-height:1.45;width:auto;flex:none;}\n#top.postid-17782 .hc-product-layout .hc-stat span{width:auto;max-width:none;flex:none;}\n#top.postid-17782 .hc-product-layout .hc-power-list{width:100%;min-width:0;margin-top:24px;}\n#top.postid-17782 .hc-product-layout .hc-power-list table{width:100%;}\n#top.postid-17782 .hc-product-layout .hc-supply-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:24px;}\n#top.postid-17782 .hc-product-layout .hc-supply-grid>.hc-card{min-width:0;margin:0;padding:24px;border:1px solid var(--hc-line);background:#fff;}\n#top.postid-17782 .hc-product-layout .hc-supply-trust{margin-top:24px;padding:20px 24px;border-left:3px solid #aebdb5;background:#fff;}\n#top.postid-17782 .hc-product-layout .hc-supply-trust h3{margin:0 0 8px;font-size:18px;}\n#top.postid-17782 .hc-product-layout .hc-supply-trust p{margin:0;font-size:15px;}\n@media(max-width:1099px){#top.postid-17782 .hc-product-layout .hc-stat-band{grid-template-columns:repeat(2,minmax(0,1fr));}}\n@media(max-width:767px){#top.postid-17782 .hc-product-layout .hc-power-list table,#top.postid-17782 .hc-product-layout .hc-power-list tbody,#top.postid-17782 .hc-product-layout .hc-power-list tr{display:block;width:100%;}#top.postid-17782 .hc-product-layout .hc-power-list td{display:block;width:100%;white-space:normal;text-align:left;padding:12px 16px;}#top.postid-17782 .hc-product-layout .hc-power-list td:first-child,#top.postid-17782 .hc-product-layout .hc-power-list td:empty{display:none;}#top.postid-17782 .hc-product-layout .hc-supply-grid{grid-template-columns:minmax(0,1fr);}#top.postid-17782 .hc-product-layout .hc-supply-grid>.hc-card{padding:20px;}}\n@media(max-width:599px){#top.postid-17782 .hc-product-layout .hc-stat-band{grid-template-columns:minmax(0,1fr);gap:10px;}#top.postid-17782 .hc-product-layout .hc-stat strong{font-size:20px;}}<\/style>\n<div class=\"hc-product-layout\">\n<section class=\"hc-hero\">\n<div class=\"hc-hero-copy\"><span class=\"hc-eyebrow\">HAN CHANG \u00b7 COMPOUND PREHEATING<\/span><\/p>\n<h1>High-Frequency Preheater for Urea Toilet Seats<\/h1>\n<div class=\"hc-product-tags\"><span>UF compound preheating<\/span><span>Timed heating<\/span><span>Automatic lid opening and closing<\/span><\/div>\n<div class=\"hc-product-lead\">Han Chang\u2019s high-frequency preheater prepares urea-formaldehyde (UF) molding compound before compression molding toilet seat lids and rings. RF dielectric heating brings part of the temperature rise upstream, while timed heating and automatic lid opening and closing simplify the operator\u2019s batch routine. A practical addition for factories improving production efficiency and quality consistency at the material-preparation stage.<\/div>\n<div class=\"hc-actions\"><a class=\"hc-btn hc-btn-primary\" href=\"https:\/\/hanchang.com.tw\/en\/contact-us\/\">Request a quotation<\/a><a class=\"hc-btn hc-btn-secondary\" href=\"#hcproduct-specs\">View power options<\/a><\/div>\n<\/div>\n<div class=\"hc-product-static-machine-image\">\n<figure class=\"hc-product-machine-figure\"><img decoding=\"async\" alt=\"Flat-platform high-frequency preheater with the lid open.\" class=\"wp-image-4614\" data-attachment-id=\"4614\" fetchpriority=\"high\" height=\"450\" loading=\"eager\" src=\"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial.jpg\" width=\"450\" srcset=\"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial.jpg 450w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial-200x200.jpg 200w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial-80x80.jpg 80w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial-36x36.jpg 36w, https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial-180x180.jpg 180w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><figcaption>Flat-platform high-frequency preheater with the lid open.<\/figcaption><\/figure>\n<\/div>\n<\/section>\n<div class=\"hc-stat-band\">\n<div class=\"hc-stat\"><strong>Main material<\/strong><span>Urea-formaldehyde (UF) molding compound<\/span><\/div>\n<div class=\"hc-stat\"><strong>Heating cycle<\/strong><span>Timed stop with automatic lid opening<\/span><\/div>\n<div class=\"hc-stat\"><strong>Material handling<\/strong><span>Manual loading, unloading and mold transfer<\/span><\/div>\n<div class=\"hc-stat\"><strong>Power options<\/strong><span>3, 5, 7, 10 and 25 kW<\/span><\/div>\n<\/div>\n<nav aria-label=\"On this product page\" class=\"hc-page-nav\"><a href=\"#hcproduct-benefits\">Advantages<\/a><a href=\"#hcproduct-process\">Preheating process<\/a><a href=\"#hcproduct-fit\">Materials and uses<\/a><a href=\"#hcproduct-specs\">Power selection<\/a><a href=\"#hcproduct-faq\">Buyer questions<\/a><\/nav>\n<section class=\"hc-section hc-product-machine-functions-block\" id=\"hcproduct-benefits\">\n<div class=\"hc-section-heading\">\n<h2>Prepare the charge for the next molding cycle<\/h2>\n<\/div>\n<div class=\"hc-benefits\">\n<article class=\"hc-benefit\"><span class=\"hc-benefit-index\">01<\/span><\/p>\n<div>\n<h3>Heat the compound before mold loading<\/h3>\n<p>RF dielectric heating generates heat within suitable UF molding compound. Moving part of the heating outside the mold prepares the charge for the next stage, with the downstream press handling molding and curing.<\/p>\n<\/div>\n<\/article>\n<article class=\"hc-benefit\"><span class=\"hc-benefit-index\">02<\/span><\/p>\n<div>\n<h3>Finish heating with a clear handoff<\/h3>\n<p>When the set heating time ends, heating stops and the lid opens automatically. This gives the operator a clear point to remove the charge and transfer it to the toilet seat mold.<\/p>\n<\/div>\n<\/article>\n<article class=\"hc-benefit\"><span class=\"hc-benefit-index\">03<\/span><\/p>\n<div>\n<h3>Leave lid lifting to the machine<\/h3>\n<p>Automatic lid opening and closing remove the repeated manual lifting and lowering of the lid. The operator weighs the compound, loads the container, and transfers the preheated charge.<\/p>\n<\/div>\n<\/article>\n<article class=\"hc-benefit\"><span class=\"hc-benefit-index\">04<\/span><\/p>\n<div>\n<h3>Add preheating around your existing press<\/h3>\n<p>Pair the preheater with a suitable UF toilet seat compression press. Five power options let you match the purchase to charge requirements and plant power while retaining the downstream molding equipment.<\/p>\n<\/div>\n<\/article>\n<\/div>\n<\/section>\n<section class=\"hc-section\" id=\"hcproduct-process\">\n<div class=\"hc-section-heading\">\n<h2>From UF compound to the molding press<\/h2>\n<\/div>\n<div class=\"hc-process-grid\">\n<div class=\"hc-process-copy\">\n<p>A batch-preheating workflow with manual loading and transfer. The downstream compression press performs molding and curing.<\/p>\n<\/div>\n<div class=\"hc-video\">\n<div class=\"hc-video-embed\" style=\"position:relative;width:100%;aspect-ratio:4\/3;overflow:hidden;border:1px solid #d5e1de;border-radius:4px;background:#000;\"><iframe src=\"https:\/\/www.youtube.com\/embed\/NP7lFRZ3nWY?rel=0\" title=\"Flat-platform HF preheater operating reference\" width=\"480\" height=\"360\" loading=\"lazy\" referrerpolicy=\"strict-origin-when-cross-origin\" allow=\"accelerometer; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen style=\"position:absolute;inset:0;width:100%;height:100%;border:0;display:block;\"><\/iframe><\/div>\n<p class=\"hc-video-source\"><a class=\"noLightbox\" href=\"https:\/\/www.youtube.com\/watch?v=NP7lFRZ3nWY\" target=\"_blank\" rel=\"noopener\">Watch on YouTube<\/a><\/p>\n<div class=\"hc-video-label\"><span>Flat-platform HF preheater operating reference<\/span><span>01:36<\/span><\/div>\n<p class=\"hc-video-caption\">Han Chang flat-platform machine operation. Compound and preheating conditions for toilet seats are matched to the production requirements.<\/p>\n<\/div>\n<\/div>\n<div class=\"hc-workflow-grid\">\n<article class=\"hc-workflow-card\">\n<h3>Weigh, load and preheat<\/h3>\n<div><strong>Weigh the molding charge<\/strong><\/p>\n<p>Weigh the UF compound required for the lid or seat ring and place it in a suitable dedicated preheating container.<\/p>\n<\/div>\n<div><strong>Load the container and set the heating time<\/strong><\/p>\n<p>The operator places the container in the preheater and sets the heating time for the compound and batch. The lid closes automatically for high-frequency preheating.<\/p>\n<\/div>\n<\/article>\n<article class=\"hc-workflow-card\">\n<h3>Heating stops, then transfer to the mold<\/h3>\n<div><strong>Complete timed heating<\/strong><\/p>\n<p>At the end of the set time, high-frequency heating stops and the lid opens automatically for manual unloading.<\/p>\n<\/div>\n<div><strong>Transfer the charge into the mold<\/strong><\/p>\n<p>The operator removes the container and pours the preheated compound into the prepared toilet seat mold. The compression press then molds and cures the part.<\/p>\n<\/div>\n<\/article>\n<\/div>\n<p class=\"hc-workflow-note\">Coordinate the end of preheating with the next mold charge. A short transfer route and minimal waiting help bring the heated UF compound to the press at the right point in the production cycle.<\/p>\n<\/section>\n<section class=\"hc-section hc-product-selection-guide-block\" id=\"hcproduct-fit\">\n<div class=\"hc-section-heading\">\n<h2>UF compound for toilet seat lids and rings<\/h2>\n<\/div>\n<div class=\"hc-selection-grid\">\n<div class=\"hc-selection-panel\">\n<h3>Urea-formaldehyde molding powder<\/h3>\n<p>The main material is UF molding compound suitable for RF heating, prepared in batches before toilet seat compression molding. Compound grade, charge weight and loading arrangement guide the preheating conditions.<\/p>\n<\/div>\n<div class=\"hc-selection-panel\">\n<h3>Toilet seat lids<\/h3>\n<p>Preheat the lid charge before transferring it manually into the compression mold. Lid shape, thickness and charge weight guide batch preparation and the handoff to molding.<\/p>\n<\/div>\n<div class=\"hc-selection-panel\">\n<h3>Toilet seat rings<\/h3>\n<p>Prepare the ring charge before mold loading, using the ring\u2019s own material requirement and production schedule. Lid and ring batches can be planned separately within the same toilet seat production line.<\/p>\n<\/div>\n<div class=\"hc-selection-panel\">\n<h3>Existing UF molding lines<\/h3>\n<p>Add charge preheating upstream of a suitable toilet seat compression press. Position the equipment around the operator\u2019s unloading and transfer routine to connect material preparation with the existing molding workflow.<\/p>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"hc-section hc-product-model-overview-block\" id=\"hcproduct-specs\">\n<div class=\"hc-section-heading\">\n<h2>Preheater power options<\/h2>\n<\/div>\n<div class=\"hc-spec-intro\">\n<p>Five separate power options\u20143, 5, 7, 10 and 25 kW\u2014support selection around the molding charge and production schedule.<\/p>\n<\/div>\n<div class=\"hc-purchase-note\">\n<h3>Choose from five power options<\/h3>\n<p>Start with the UF compound data and charge weight for each lid and ring. Then match container dimensions, preheating requirements and manual transfer time to the press-loading schedule. Han Chang can help compare the five power options alongside your plant voltage, frequency and available electrical supply. If several molds will share a preheater, include their loading sequence so selection reflects the actual production routine.<\/p>\n<\/div>\n<p class=\"hc-spec-scope\">Five separate power options are shown below for matching batch requirements and press loading schedules.<\/p>\n<div class=\"hc-power-list\"><div class='avia-data-table-wrap av-av_table-50e186637ed9ed16c605214627a3a44d avia_responsive_table avia-table-1'><table  class='avia-table avia-data-table avia_pricing_default  avia-builder-el-1  avia-builder-el-no-sibling '  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Table\" ><tbody><tr class=''><td class='avia-highlight-col'>Performance \/ Model<\/td><td class=''>3 kW preheating model<\/td><td class=''>5 kW preheating model<\/td><td class=''>7 kW preheating model<\/td><td class=''>10 kW preheating model<\/td><\/tr><tr class=''><td class='avia-highlight-col'>Performance \/ Model<\/td><td class=''>25 kW preheating model<\/td><td class=''><\/td><td class=''><\/td><td class=''><\/td><\/tr><\/tbody><\/table><\/div><\/div>\n<\/section>\n<section class=\"hc-section hc-product-service-block\">\n<section class=\"hc-product-section hc-service-section\">\n<div class=\"hc-section-heading\">\n<h2>Add a preheater or plan a toilet seat production line<\/h2>\n<\/div>\n<p>Han Chang provides integrated equipment services for toilet seat production. Add an HF preheater to an existing press, or plan material preheating and compression molding equipment together for a new line.<\/p>\n<div class=\"hc-supply-grid\">\n<article class=\"hc-card\">\n<h3>Existing line: add preheating before the press<\/h3>\n<p>Match the preheater to the existing single-layer or double-layer toilet seat press, UF charge weight and operator position. Focus the investment on the process stage you want to improve.<\/p>\n<\/article>\n<article class=\"hc-card\">\n<h3>New line: coordinate preheating and molding<\/h3>\n<p>Arrange preheating, manual unloading and mold charging around the seat-ring and cover production plan. Coordinating these steps makes equipment procurement and the production sequence easier to manage.<\/p>\n<\/article>\n<\/div>\n<div class=\"hc-supply-trust\">\n<h3>Factory-backed customer service and repair support<\/h3>\n<p>Han Chang has factories in Taiwan and mainland China. The mainland factory has dedicated customer service and professional repair departments to support equipment operation and maintenance needs.<\/p>\n<\/div>\n<\/section>\n<\/section>\n<section class=\"hc-section hc-product-faq-block\" id=\"hcproduct-faq\">\n<section class=\"hc-product-section hc-faq-section hc-product-faq\">\n<h2>Toilet seat HF preheater FAQs<\/h2>\n<details>\n<summary>Where does a UF toilet seat preheater fit in production?<\/summary>\n<p>It preheats urea-formaldehyde molding compound before the charge enters the compression mold. The operator transfers the heated compound into the mold, and the downstream press forms and cures the toilet seat lid or ring.<\/p>\n<\/details>\n<details>\n<summary>What do UF and duroplast mean in toilet seat production?<\/summary>\n<p>UF stands for urea-formaldehyde. Duroplast is a term for thermoset plastics, and UF is a common material used for duroplast toilet seats. This preheater prepares suitable UF molding compound before lid and ring compression molding.<\/p>\n<\/details>\n<details>\n<summary>Which operations are automatic?<\/summary>\n<p>The lid opens and closes automatically. Heating stops when the set time ends, followed by automatic lid opening. Weighing, container loading, unloading and transfer to the mold are handled by the operator.<\/p>\n<\/details>\n<details>\n<summary>How do I select the preheater power?<\/summary>\n<p>Choose from 3, 5, 7, 10 and 25 kW options using compound grade, batch weight, container requirements and the press-loading schedule. Include the charge weights for both the lid and ring to help select a configuration that fits production.<\/p>\n<\/details>\n<details>\n<summary>How are UF preheating time and temperature established?<\/summary>\n<p>Use the compound supplier\u2019s processing guidance and trials with the actual charge to establish a suitable preheated condition for mold flow and curing. Allow for transfer time when setting the heating duration. This machine stops heating when the set time elapses and then opens the lid automatically.<\/p>\n<\/details>\n<details>\n<summary>Does a higher kW option always mean higher energy use?<\/summary>\n<p>Actual energy use also depends on heating duration and batch scheduling. The listed 3, 5, 7, 10 and 25 kW figures are equipment power options. Use the selected model\u2019s electrical input data and actual operating conditions when estimating plant energy demand.<\/p>\n<\/details>\n<details>\n<summary>What determines the price, and can I use my existing press?<\/summary>\n<p>The quotation depends on the selected power option and requirements such as the plant electrical supply. A suitable existing UF toilet seat compression press can be paired with a preheater. Plan charge weight, mold-loading intervals and manual transfer together; product photos and press details are a useful starting point.<\/p>\n<\/details>\n<\/section>\n<\/section>\n<section class=\"hc-section\" id=\"hcproduct-related-equipment\">\n<div class=\"hc-section-heading\">\n<h2>Pair with a toilet seat molding press<\/h2>\n<\/div>\n<div class=\"hc-related-equipment-grid\">\n<article class=\"hc-related-equipment-card hc-link-card\">\n<div class=\"hc-link-copy\">\n<h3 id=\"hc-related-17782-0-title\">Single-Layer Urea Toilet Seat Molding Machine<\/h3>\n<p>Compression molding for UF toilet seat rings and covers; coordinate preheating with each mold charge.<\/p>\n<\/div>\n<p class=\"hc-link-action-wrap\"><a aria-labelledby=\"hc-related-17782-0-title hc-related-17782-0-action\" class=\"hc-link-action\" href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/urea-toilet-seat-molding-machine\/\"><span id=\"hc-related-17782-0-action\">View machine<\/span> <span aria-hidden=\"true\">\u2192<\/span><\/a><\/p>\n<\/article>\n<article class=\"hc-related-equipment-card hc-link-card\">\n<div class=\"hc-link-copy\">\n<h3 id=\"hc-related-17782-1-title\">Double-Layer Urea Toilet Seat Molding Machine<\/h3>\n<p>A double-layer mold arrangement for UF toilet seat production; match preheating to the charge requirements and loading sequence.<\/p>\n<\/div>\n<p class=\"hc-link-action-wrap\"><a aria-labelledby=\"hc-related-17782-1-title hc-related-17782-1-action\" class=\"hc-link-action\" href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/double-layer-urea-toilet-seat-cover-molding-machine\/\"><span id=\"hc-related-17782-1-action\">View machine<\/span> <span aria-hidden=\"true\">\u2192<\/span><\/a><\/p>\n<\/article>\n<article class=\"hc-related-equipment-card hc-link-card\">\n<div class=\"hc-link-copy\">\n<h3 id=\"hc-related-17782-2-title\">Chain-Synchronized Double-Layer Urea Toilet Seat Press<\/h3>\n<p>Pair UF preheating with a press whose chain device coordinates closing, degassing and opening at both mold levels. Plan prepared charges for the two mold sets and their manual loading sequence.<\/p>\n<\/div>\n<p class=\"hc-link-action-wrap\"><a class=\"hc-link-action\" href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/synchronized-double-layer-urea-toilet-seat-molding-machine\/\" aria-labelledby=\"hc-related-17782-2-title hc-related-17782-2-action\"><span id=\"hc-related-17782-2-action\">View machine<\/span> <span aria-hidden=\"true\">\u2192<\/span><\/a><\/p>\n<\/article>\n<\/div>\n<p><a class=\"hc-related-series-link\" href=\"https:\/\/hanchang.com.tw\/en\/portfolio_entries\/toilet-seat-and-cover-molding-machine\/\">Explore toilet seat molding machines \u2192<\/a><\/p>\n<style id=\"hc-related-clickable-v1\">#top.postid-17782 #hcproduct-related-equipment .hc-related-equipment-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:stretch;width:100%;}\n#top.postid-17782 #hcproduct-related-equipment article.hc-link-card{display:flex;flex-direction:column;justify-content:space-between;gap:25px;position:relative;min-width:0;box-sizing:border-box;background:#eff6f4;border:1px solid #aac3be;border-top:4px solid #27675f;border-radius:8px;padding:26px;text-decoration:none;color:#203f45;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s;}\n#top.postid-17782 #hcproduct-related-equipment article.hc-link-card h3{margin:13px 0 14px;font-size:24px;line-height:1.35;letter-spacing:-.3px;color:#203f45;text-transform:none;}\n#top.postid-17782 #hcproduct-related-equipment .hc-link-copy>p:not(.hc-related-label){color:#445d60;font-size:17px;line-height:1.7;letter-spacing:normal;margin:0;}\n#top.postid-17782 #hcproduct-related-equipment .hc-link-kicker,#top.postid-17782 #hcproduct-related-equipment article.hc-link-card .hc-related-label{display:block;font-size:11px;line-height:1.5;letter-spacing:1px;font-weight:700;color:#4c7069;margin:0 0 10px;}\n#top.postid-17782 #hcproduct-related-equipment .hc-link-action{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:49px;box-sizing:border-box;background:#205c54;color:#fff;font-size:16px;line-height:1.4;letter-spacing:normal;font-weight:700;border-radius:5px;padding:13px 18px;align-self:stretch;text-decoration:none;}\n#top.postid-17782 #hcproduct-related-equipment .hc-link-action>span[aria-hidden]{font-size:23px;line-height:1;color:inherit;}\n#top.postid-17782 #hcproduct-related-equipment .hc-link-action-wrap{margin:0;}\n#top.postid-17782 #hcproduct-related-equipment .hc-link-action::after{content:\"\";position:absolute;inset:0;border-radius:8px;}\n#top.postid-17782 #hcproduct-related-equipment .hc-link-action:hover{color:#fff;text-decoration:none;}\n#top.postid-17782 #hcproduct-related-equipment article.hc-link-card:focus-within{outline:3px solid #97621a;outline-offset:4px;}\n#top.postid-17782 #hcproduct-related-equipment article.hc-link-card:hover{background:#e4f0ed;border-color:#397c70;box-shadow:0 5px 15px #17483e17;color:#203f45;text-decoration:none;}\n#top.postid-17782 #hcproduct-related-equipment article.hc-link-card:hover .hc-link-action{background:#164b44;color:#fff;}\n#top.postid-17782 #hcproduct-related-equipment article.hc-link-card:focus-visible,#top.postid-17782 #hcproduct-related-equipment .hc-related-series-link:focus-visible{outline:3px solid #97621a;outline-offset:4px;}\n#top.postid-17782 #hcproduct-related-equipment a.hc-related-series-link{display:block;box-sizing:border-box;border:1px solid #aac3be;border-radius:6px;margin-top:22px;padding:18px 22px;color:#205c54;font-size:17px;line-height:1.5;font-weight:700;text-decoration:underline;text-underline-offset:4px;background:#fff;min-height:58px;}\n@media(max-width:650px){#top.postid-17782 #hcproduct-related-equipment .hc-related-equipment-grid{grid-template-columns:minmax(0,1fr);gap:18px;}#top.postid-17782 #hcproduct-related-equipment article.hc-link-card{padding:22px;gap:22px;}#top.postid-17782 #hcproduct-related-equipment article.hc-link-card h3{font-size:22px;}#top.postid-17782 #hcproduct-related-equipment .hc-link-copy>p:not(.hc-related-label){font-size:16px;line-height:1.65;}#top.postid-17782 #hcproduct-related-equipment a.hc-related-series-link{font-size:16px;padding:18px 20px;}}\n@media(prefers-reduced-motion:reduce){#top.postid-17782 #hcproduct-related-equipment article.hc-link-card{transition:none;}}<\/style>\n<\/section>\n<section class=\"hc-product-section hc-rfq-section\" id=\"hcproduct-rfq\">\n<div class=\"hc-section-heading\">\n<h2>Match the preheater to your UF toilet seat line<\/h2>\n<\/div>\n<p>Send a lid or ring photo, the UF compound name and charge weight. If you already run a press, include its details. Han Chang can help select the preheater power and prepare an equipment quotation.<\/p>\n<div class=\"hc-actions\"><a class=\"hc-btn hc-btn-primary\" href=\"https:\/\/hanchang.com.tw\/en\/contact-us\/\">Request a quotation<\/a><\/div>\n<\/section>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Where does a UF toilet seat preheater fit in production?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It preheats urea-formaldehyde molding compound before the charge enters the compression mold. The operator transfers the heated compound into the mold, and the downstream press forms and cures the toilet seat lid or ring.\"}}, {\"@type\": \"Question\", \"name\": \"What do UF and duroplast mean in toilet seat production?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"UF stands for urea-formaldehyde. Duroplast is a term for thermoset plastics, and UF is a common material used for duroplast toilet seats. This preheater prepares suitable UF molding compound before lid and ring compression molding.\"}}, {\"@type\": \"Question\", \"name\": \"Which operations are automatic?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The lid opens and closes automatically. Heating stops when the set time ends, followed by automatic lid opening. Weighing, container loading, unloading and transfer to the mold are handled by the operator.\"}}, {\"@type\": \"Question\", \"name\": \"How do I select the preheater power?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose from 3, 5, 7, 10 and 25 kW options using compound grade, batch weight, container requirements and the press-loading schedule. Include the charge weights for both the lid and ring to help select a configuration that fits production.\"}}, {\"@type\": \"Question\", \"name\": \"How are UF preheating time and temperature established?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use the compound supplier\u2019s processing guidance and trials with the actual charge to establish a suitable preheated condition for mold flow and curing. Allow for transfer time when setting the heating duration. This machine stops heating when the set time elapses and then opens the lid automatically.\"}}, {\"@type\": \"Question\", \"name\": \"Does a higher kW option always mean higher energy use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Actual energy use also depends on heating duration and batch scheduling. The listed 3, 5, 7, 10 and 25 kW figures are equipment power options. Use the selected model\u2019s electrical input data and actual operating conditions when estimating plant energy demand.\"}}, {\"@type\": \"Question\", \"name\": \"What determines the price, and can I use my existing press?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The quotation depends on the selected power option and requirements such as the plant electrical supply. A suitable existing UF toilet seat compression press can be paired with a preheater. Plan charge weight, mold-loading intervals and manual transfer together; product photos and press details are a useful starting point.\"}}]}<\/script><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"VideoObject\", \"name\": \"Flat-platform HF preheater operating reference\", \"description\": \"Han Chang flat-platform machine operation. Compound and preheating conditions for toilet seats are matched to the production requirements.\", \"thumbnailUrl\": \"https:\/\/img.youtube.com\/vi\/NP7lFRZ3nWY\/hqdefault.jpg\", \"embedUrl\": \"https:\/\/www.youtube.com\/embed\/NP7lFRZ3nWY\", \"uploadDate\": \"2026-09-07T03:01:09-07:00\", \"duration\": \"PT96S\"}<\/script><\/div>\n<\/div><\/section>\n","protected":false},"excerpt":{"rendered":"<p>Han Chang\u2019s high-frequency preheater prepares urea-formaldehyde (UF) molding compound before compression molding toilet seat lids and rings. RF dielectric heating brings part of the temperature rise upstream, while timed heating and automatic lid opening and closing simplify the operator\u2019s batch routine. A practical addition for factories improving production efficiency and quality consistency at the material-preparation stage.<\/p>\n","protected":false},"author":5,"featured_media":4614,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"tags":[],"portfolio_entries":[83],"class_list":["post-17782","portfolio","type-portfolio","status-publish","has-post-thumbnail","hentry","portfolio_entries-toilet-seat-and-cover-molding-machine"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>UF Toilet Seat High-Frequency Preheater | Han Chang<\/title>\n<meta name=\"description\" content=\"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"UF Toilet Seat High-Frequency Preheater | Han Chang\" \/>\n<meta property=\"og:description\" content=\"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/\" \/>\n<meta property=\"og:site_name\" content=\"\u6f22\u83d6\u6a5f\u68b0\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-15T15:56:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"450\" \/>\n\t<meta property=\"og:image:height\" content=\"450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"UF Toilet Seat High-Frequency Preheater | Han Chang\" \/>\n<meta name=\"twitter:description\" content=\"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/\",\"url\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/\",\"name\":\"UF Toilet Seat High-Frequency Preheater | Han Chang\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/hanchang.com.tw\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/high-frequency-preheater-industrial.jpg\",\"datePublished\":\"2026-09-11T03:12:14+00:00\",\"dateModified\":\"2026-10-15T15:56:29+00:00\",\"description\":\"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/#primaryimage\",\"url\":\"https:\\\/\\\/hanchang.com.tw\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/high-frequency-preheater-industrial.jpg\",\"contentUrl\":\"https:\\\/\\\/hanchang.com.tw\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/high-frequency-preheater-industrial.jpg\",\"width\":450,\"height\":450,\"caption\":\"High Frequency Preheating Machine - Han Chang Machinery\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/portfolio-item\\\/high-frequency-preheater-urea-toilet-seats\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9801\",\"item\":\"https:\\\/\\\/hanchang.com.tw\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"High-Frequency Preheater for Urea Toilet Seats\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/hanchang.com.tw\\\/#website\",\"url\":\"https:\\\/\\\/hanchang.com.tw\\\/\",\"name\":\"\u6f22\u83d6\u6a5f\u68b0\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/hanchang.com.tw\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"UF Toilet Seat High-Frequency Preheater | Han Chang","description":"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/","og_locale":"en_US","og_type":"article","og_title":"UF Toilet Seat High-Frequency Preheater | Han Chang","og_description":"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.","og_url":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/","og_site_name":"\u6f22\u83d6\u6a5f\u68b0","article_modified_time":"2026-10-15T15:56:29+00:00","og_image":[{"width":450,"height":450,"url":"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_title":"UF Toilet Seat High-Frequency Preheater | Han Chang","twitter_description":"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.","twitter_misc":{"Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/","url":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/","name":"UF Toilet Seat High-Frequency Preheater | Han Chang","isPartOf":{"@id":"https:\/\/hanchang.com.tw\/#website"},"primaryImageOfPage":{"@id":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/#primaryimage"},"image":{"@id":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/#primaryimage"},"thumbnailUrl":"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial.jpg","datePublished":"2026-09-11T03:12:14+00:00","dateModified":"2026-10-15T15:56:29+00:00","description":"Preheat UF compound before toilet seat compression molding. Timed heating, automatic lid opening and closing, and five power options. Request a Han Chang quote.","breadcrumb":{"@id":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/#primaryimage","url":"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial.jpg","contentUrl":"https:\/\/hanchang.com.tw\/wp-content\/uploads\/2026\/03\/high-frequency-preheater-industrial.jpg","width":450,"height":450,"caption":"High Frequency Preheating Machine - Han Chang Machinery"},{"@type":"BreadcrumbList","@id":"https:\/\/hanchang.com.tw\/en\/portfolio-item\/high-frequency-preheater-urea-toilet-seats\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9801","item":"https:\/\/hanchang.com.tw\/en\/"},{"@type":"ListItem","position":2,"name":"High-Frequency Preheater for Urea Toilet Seats"}]},{"@type":"WebSite","@id":"https:\/\/hanchang.com.tw\/#website","url":"https:\/\/hanchang.com.tw\/","name":"\u6f22\u83d6\u6a5f\u68b0","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/hanchang.com.tw\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/portfolio\/17782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/portfolio"}],"about":[{"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/types\/portfolio"}],"author":[{"embeddable":true,"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/comments?post=17782"}],"version-history":[{"count":4,"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/portfolio\/17782\/revisions"}],"predecessor-version":[{"id":18540,"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/portfolio\/17782\/revisions\/18540"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/media\/4614"}],"wp:attachment":[{"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/media?parent=17782"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/tags?post=17782"},{"taxonomy":"portfolio_entries","embeddable":true,"href":"https:\/\/hanchang.com.tw\/en\/wp-json\/wp\/v2\/portfolio_entries?post=17782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}