{"id":34749,"date":"2026-08-31T10:54:32","date_gmt":"2026-08-31T02:54:32","guid":{"rendered":"https:\/\/www.bestpcbs.com\/blog\/?p=34749"},"modified":"2026-08-31T10:54:40","modified_gmt":"2026-08-31T02:54:40","slug":"kingboard-price-increase","status":"publish","type":"post","link":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/","title":{"rendered":"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#What_Changed_in_the_August_28_Notice\" >What Changed in the August 28 Notice?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#When_Does_the_New_Pricing_Apply\" >When Does the New Pricing Apply?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#Why_Are_Glass_Cloth_and_Copper_Foil_Important\" >Why Are Glass Cloth and Copper Foil Important?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#PCB_Prepreg_vs_Core_Which_Material_Is_Affected\" >PCB Prepreg vs Core: Which Material Is Affected?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#Why_Does_Prepreg_PCB_Thickness_Need_a_Construction_Check\" >Why Does Prepreg PCB Thickness Need a Construction Check?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#Does_a_20_Prepreg_Increase_Mean_a_20_PCB_Price_Increase\" >Does a 20% Prepreg Increase Mean a 20% PCB Price Increase?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#Which_Cost-Saving_Changes_Need_Engineering_Approval\" >Which Cost-Saving Changes Need Engineering Approval?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#How_Can_We_Help_You_Review_a_Material-Cost_Change\" >How Can We Help You Review a Material-Cost Change?<\/a><\/li><\/ul><\/nav><\/div>\n<div class=\"yzp-no-index\"><\/div><p>The latest <a href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/\">Kingboard price increase<\/a> concerns the materials used to manufacture PCBs, not an automatic increase in every finished-board quotation. An August 28, 2026 notice reproduced by financial media reports higher FR-4 and prepreg prices for newly accepted orders. For purchasing teams, the next step is to identify the material used in each board and confirm which commercial terms apply.<\/p>\n<p>At EBest Circuit, we help customers review PCB material requirements alongside fabrication needs. This update explains the reported changes, where they enter a multilayer board&#8217;s material bill, and what to clarify when a supplier sends a revised quotation.<\/p>\n<div style=\"width:100%;max-width:600px;margin:20px auto;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/kingboard-price-increase-hero.jpg\" alt=\"Kingboard price increase illustrated with copper-clad laminate and prepreg materials\" width=\"600\" height=\"400\" style=\"width:100%;max-width:600px;max-height:400px;height:auto;object-fit:contain;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Changed_in_the_August_28_Notice\"><\/span>What Changed in the August 28 Notice?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Gelonghui&#8217;s August 28 report, carried by Sina Finance, reproduces a notice from Guangdong Kingboard Laminates Trading Co., Ltd. The stated adjustments are:<\/p>\n<div class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td><strong>Material category in the notice<\/strong><\/td>\n<td><strong>Reported increase<\/strong><\/td>\n<\/tr>\n<tr>\n<td>FR-4, all thicknesses<\/td>\n<td>10%<\/td>\n<\/tr>\n<tr>\n<td>Prepreg: 7628 and the notice&#8217;s thicker-cloth category<\/td>\n<td>10%<\/td>\n<\/tr>\n<tr>\n<td>Prepreg: the notice&#8217;s thin-cloth category below 7628<\/td>\n<td>20%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The reproduced letter is dated August 28. We checked its wording against the report, but it was obtained through a media publication, not a direct supplier communication. Confirm the applicable grade and price with your material supplier before changing a purchase order.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"When_Does_the_New_Pricing_Apply\"><\/span>When Does the New Pricing Apply?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The notice refers to new orders accepted from its issue date. It does not establish how every distributor will handle existing inventory, previously accepted orders, or an earlier quotation that remains valid.<\/p>\n<p>Before approving a revised board price, ask for three specific confirmations:<\/p>\n<ul>\n<li><strong>Order status:<\/strong> Was the material order already accepted, or does the job still require a new purchase?<\/li>\n<li><strong>Quotation basis:<\/strong> Which material grade, copper weight, sheet size, quantity, currency, and tax basis are being compared?<\/li>\n<li><strong>Validity:<\/strong> How long does the revised quotation remain open, and what event fixes the price?<\/li>\n<\/ul>\n<p>A finished-PCB purchase order and a laminate manufacturer&#8217;s order are different transactions. Do not assume that sending a board PO earlier automatically secures an earlier material price; obtain written confirmation from the party supplying your boards.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_Are_Glass_Cloth_and_Copper_Foil_Important\"><\/span>Why Are Glass Cloth and Copper Foil Important?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The letter cites rising prices and tighter supply of glass cloth and copper foil. Both are inputs to PCB laminate production; neither is simply an optional accessory that can be removed from a drawing.<\/p>\n<p>A <a href=\"https:\/\/www.bestpcbs.com\/blog\/2024\/06\/what-is-a-copper-clad-laminate-ccl-in-pcb\/\">copper-clad laminate<\/a> combines a dielectric base with copper foil. Prepreg supplies resin-bearing reinforcement between layers during lamination. Their costs enter the material bill through different purchased items and constructions.<\/p>\n<p>The notice alone does not tell us how much either input has risen across the entire market, how long supply pressure will last, or which next adjustment will follow. Those would require separate dated evidence. For a current order, the relevant information is the supplier&#8217;s quotation for the exact material being purchased.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"PCB_Prepreg_vs_Core_Which_Material_Is_Affected\"><\/span>PCB Prepreg vs Core: Which Material Is Affected?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The distinction in <strong>PCB prepreg vs core<\/strong> matters because a multilayer stackup uses cured laminate and bonding sheets differently. A core is already cured; prepreg starts as resin-impregnated reinforcement that bonds the assembly during pressing.<\/p>\n<div style=\"width:100%;max-width:600px;margin:20px auto;\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/kingboard-price-increase-core-prepreg.jpg\" alt=\"Cured copper-clad core compared with uncoppered prepreg bonding material\" width=\"600\" height=\"400\" loading=\"lazy\" style=\"width:100%;max-width:600px;max-height:400px;height:auto;object-fit:contain;\"><\/div>\n<p>For background on the bonding stage, see our explanation of <a href=\"https:\/\/www.bestpcbs.com\/blog\/2016\/04\/prepreg-in-pcb\/\">prepreg in PCB manufacturing<\/a>. For this price review, identify the actual core and prepreg entries in the approved stackup rather than treating the entire board as a single sheet of FR-4.<\/p>\n<p>When comparing <strong>prepreg PCB material<\/strong>, retain the manufacturer&#8217;s grade, resin system, glass style, resin content, and number of plies. Two options described simply as \u201cFR-4 prepreg\u201d may not have the same electrical properties or processing behavior. A purchasing description that omits these details can hide a construction change inside an apparently cheaper quotation.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Why_Does_Prepreg_PCB_Thickness_Need_a_Construction_Check\"><\/span>Why Does Prepreg PCB Thickness Need a Construction Check?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><strong>Prepreg PCB thickness<\/strong> is not determined by a glass-style number alone. Resin content, the selected construction, and the pressed assembly all matter. Manufacturer data can list more than one thickness or resin-content option for the same glass style.<\/p>\n<p>The notice&#8217;s wording around 7628 is a supplier pricing category. It should not be converted into a universal rule that every glass-style code with a smaller numerical value is physically thinner. Match each ordered prepreg item to the supplier&#8217;s classification.<\/p>\n<p>Construction also affects <strong>PCB prepreg dielectric constant<\/strong>. Isola&#8217;s laminate-manufacturing guide explains that glass construction and retained resin content influence dielectric properties. Its material data illustrate why an apparently similar glass designation is not enough to prove equivalence; those Isola values should not be copied into a Kingboard design.<\/p>\n<p>For an impedance-controlled board, changing dielectric spacing or material properties can require a new impedance calculation and an approved stackup revision. Keep the electrical requirement fixed while evaluating the material choice.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Does_a_20_Prepreg_Increase_Mean_a_20_PCB_Price_Increase\"><\/span>Does a 20% Prepreg Increase Mean a 20% PCB Price Increase?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>No. A percentage applied to one purchased material does not automatically apply to the total selling price of a finished PCB. The board also includes other materials, fabrication operations, inspection, testing, handling, and commercial terms.<\/p>\n<div style=\"width:100%;max-width:600px;margin:20px auto;\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/kingboard-price-increase-cost-scope.jpg\" alt=\"PCB cost categories showing materials, fabrication, testing, and handling without assigning cost shares\" width=\"600\" height=\"400\" loading=\"lazy\" style=\"width:100%;max-width:600px;max-height:400px;height:auto;object-fit:contain;\"><\/div>\n<p>A useful calculation starts with the affected material lines, not the total board invoice: multiply each old material-line cost by its applicable adjustment, then add the differences. That estimates the change in those lines only, assuming the same specification, quantity, and purchasing basis.<\/p>\n<p>It still does not determine the final commercial quotation. Inventory purchased at an earlier price, panel utilization, production volume, and other cost changes may affect the outcome. Our <a href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/06\/copper-clad-laminate-price\/\">copper-clad laminate price guide<\/a> provides broader background on material-price factors.<\/p>\n<p>If a revised quotation cites the <a href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/\">Kingboard price increase<\/a>, ask which material lines changed and whether the board specification stayed the same. A traceable explanation is more useful than applying a headline percentage to every item.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Which_Cost-Saving_Changes_Need_Engineering_Approval\"><\/span>Which Cost-Saving Changes Need Engineering Approval?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Start with options that preserve the approved design, such as reviewing order quantities or panel utilization with the fabricator. Material substitutions require a separate technical decision; a lower material price does not establish that the replacement will work.<\/p>\n<div style=\"width:100%;max-width:600px;margin:20px auto;\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/kingboard-price-increase-review.jpg\" alt=\"Engineering review of material grade, layer stackup, and copper weight before a PCB substitution\" width=\"600\" height=\"400\" loading=\"lazy\" style=\"width:100%;max-width:600px;max-height:400px;height:auto;object-fit:contain;\"><\/div>\n<ul>\n<li><strong>Changing prepreg construction:<\/strong> Review finished dielectric spacing, resin availability around copper features, and electrical requirements.<\/li>\n<li><strong>Changing laminate grade:<\/strong> Compare the relevant thermal and electrical properties and any material restrictions on the drawing.<\/li>\n<li><strong>Reducing copper:<\/strong> Recheck current handling, thermal behavior, and fabrication requirements rather than treating copper weight as a purchasing-only choice.<\/li>\n<li><strong>Changing a qualified build:<\/strong> Agree on required samples, inspection, and customer approval before production release.<\/li>\n<\/ul>\n<p>Keep the existing approved construction if equivalence has not been demonstrated or the customer does not permit substitutions. Requalification time and scrap risk can outweigh a small purchase-price saving.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_Can_We_Help_You_Review_a_Material-Cost_Change\"><\/span>How Can We Help You Review a Material-Cost Change?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>At EBest Circuit, we provide PCB fabrication and PCBA services with technical support for material and build requirements. We can review your approved stackup and discuss which material choices are fixed, which alternatives may be evaluated, and what information is needed for a current quotation.<\/p>\n<p>Send your <strong>Gerber files, stackup, specified laminate grade, copper weight, order quantity, and required delivery date<\/strong> to <a href=\"mailto:sales@bestpcbs.com\">sales@bestpcbs.com<\/a>. If you are comparing a revised quote, include the earlier specification and quote date so we can compare the same build. Any proposed material change should be documented and approved before manufacturing.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The latest Kingboard price increase concerns the materials used to manufacture PCBs, not an automatic increase in every finished-board quotation. An August 28, 2026 notice reproduced by financial media reports higher FR-4 and prepreg prices for newly accepted orders. For purchasing teams, the next step is to identify the material used in each board and [&hellip;]<\/p>\n","protected":false},"author":623,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[175,5309,3],"tags":[7992,7996,7995,7993,7994],"class_list":["post-34749","post","type-post","status-publish","format-standard","hentry","category-best-pcb","category-pcb-material","category-pcb-news","tag-kingboard-price-increase","tag-pcb-prepreg-dielectric-constant","tag-pcb-prepreg-vs-core","tag-prepreg-pcb-material","tag-prepreg-pcb-thickness"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Kingboard&#039;s reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Love PCB\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"PCB &amp; MCPCB - EBest PCB - More Technical Details &amp; News on PCB, MCPCB &amp; Ceramic PCB from EBest PCB\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Kingboard Price Increase: FR-4 and Prepreg, August 2026\" \/>\n\t\t<meta property=\"og:description\" content=\"Kingboard&#039;s reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/08\/logo.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/08\/logo.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2026-08-31T02:54:32+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-08-31T02:54:40+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Bestpcbs1\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:site\" content=\"@bestpcbs\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Kingboard Price Increase: FR-4 and Prepreg, August 2026\" \/>\n\t\t<meta name=\"twitter:description\" content=\"Kingboard&#039;s reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.\" \/>\n\t\t<meta name=\"twitter:creator\" content=\"@bestpcbs\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2016\/02\/logo.gif\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BlogPosting\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#blogposting\",\"name\":\"Kingboard Price Increase: FR-4 and Prepreg, August 2026\",\"headline\":\"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026\",\"author\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/author\\\/seo\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/#organization\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/kingboard-price-increase-hero.jpg\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#articleImage\",\"width\":600,\"height\":400},\"datePublished\":\"2026-08-31T10:54:32+08:00\",\"dateModified\":\"2026-08-31T10:54:40+08:00\",\"inLanguage\":\"en-US\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#webpage\"},\"articleSection\":\"best pcb, PCB Material, PCB News, kingboard price increase, pcb prepreg dielectric constant, pcb prepreg vs core, prepreg pcb material, prepreg pcb thickness\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/category\\\/pcb-news\\\/#listItem\",\"name\":\"PCB News\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/category\\\/pcb-news\\\/#listItem\",\"position\":2,\"name\":\"PCB News\",\"item\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/category\\\/pcb-news\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#listItem\",\"name\":\"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#listItem\",\"position\":3,\"name\":\"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/category\\\/pcb-news\\\/#listItem\",\"name\":\"PCB News\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/#organization\",\"name\":\"PCB & MCPCB - Best Technology\",\"description\":\"More Technical Details & News on PCB, MCPCB & Ceramic PCB from EBest PCB\",\"url\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/\",\"telephone\":\"+8675529091601\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/logo.png\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#organizationLogo\"},\"image\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#organizationLogo\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/Bestpcbs1\",\"https:\\\/\\\/twitter.com\\\/bestpcbs\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UCJsTR02i6mtLFnBBNC_i4bQ\\\/featured\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/best-pcb-technology\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/author\\\/seo\\\/#author\",\"url\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/author\\\/seo\\\/\",\"name\":\"Love PCB\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/a7888223b6638d2aaf515046d034707e?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"Love PCB\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#webpage\",\"url\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/\",\"name\":\"Kingboard Price Increase: FR-4 and Prepreg, August 2026\",\"description\":\"Kingboard's reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/2026\\\/08\\\/kingboard-price-increase\\\/#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/author\\\/seo\\\/#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/author\\\/seo\\\/#author\"},\"datePublished\":\"2026-08-31T10:54:32+08:00\",\"dateModified\":\"2026-08-31T10:54:40+08:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/\",\"name\":\"PCB & MCPCB - Best Technology\",\"description\":\"More Technical Details & News on PCB, MCPCB & Ceramic PCB from EBest PCB\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.bestpcbs.com\\\/blog\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"Kingboard Price Increase: FR-4 and Prepreg, August 2026","description":"Kingboard's reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.","canonical_url":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BlogPosting","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#blogposting","name":"Kingboard Price Increase: FR-4 and Prepreg, August 2026","headline":"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026","author":{"@id":"https:\/\/www.bestpcbs.com\/blog\/author\/seo\/#author"},"publisher":{"@id":"https:\/\/www.bestpcbs.com\/blog\/#organization"},"image":{"@type":"ImageObject","url":"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2026\/08\/kingboard-price-increase-hero.jpg","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#articleImage","width":600,"height":400},"datePublished":"2026-08-31T10:54:32+08:00","dateModified":"2026-08-31T10:54:40+08:00","inLanguage":"en-US","mainEntityOfPage":{"@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#webpage"},"isPartOf":{"@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#webpage"},"articleSection":"best pcb, PCB Material, PCB News, kingboard price increase, pcb prepreg dielectric constant, pcb prepreg vs core, prepreg pcb material, prepreg pcb thickness"},{"@type":"BreadcrumbList","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/www.bestpcbs.com\/blog#listItem","position":1,"name":"Home","item":"https:\/\/www.bestpcbs.com\/blog","nextItem":{"@type":"ListItem","@id":"https:\/\/www.bestpcbs.com\/blog\/category\/pcb-news\/#listItem","name":"PCB News"}},{"@type":"ListItem","@id":"https:\/\/www.bestpcbs.com\/blog\/category\/pcb-news\/#listItem","position":2,"name":"PCB News","item":"https:\/\/www.bestpcbs.com\/blog\/category\/pcb-news\/","nextItem":{"@type":"ListItem","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#listItem","name":"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026"},"previousItem":{"@type":"ListItem","@id":"https:\/\/www.bestpcbs.com\/blog#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#listItem","position":3,"name":"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026","previousItem":{"@type":"ListItem","@id":"https:\/\/www.bestpcbs.com\/blog\/category\/pcb-news\/#listItem","name":"PCB News"}}]},{"@type":"Organization","@id":"https:\/\/www.bestpcbs.com\/blog\/#organization","name":"PCB & MCPCB - Best Technology","description":"More Technical Details & News on PCB, MCPCB & Ceramic PCB from EBest PCB","url":"https:\/\/www.bestpcbs.com\/blog\/","telephone":"+8675529091601","logo":{"@type":"ImageObject","url":"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/08\/logo.png","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#organizationLogo"},"image":{"@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#organizationLogo"},"sameAs":["https:\/\/www.facebook.com\/Bestpcbs1","https:\/\/twitter.com\/bestpcbs","https:\/\/www.youtube.com\/channel\/UCJsTR02i6mtLFnBBNC_i4bQ\/featured","https:\/\/www.linkedin.com\/company\/best-pcb-technology"]},{"@type":"Person","@id":"https:\/\/www.bestpcbs.com\/blog\/author\/seo\/#author","url":"https:\/\/www.bestpcbs.com\/blog\/author\/seo\/","name":"Love PCB","image":{"@type":"ImageObject","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#authorImage","url":"https:\/\/secure.gravatar.com\/avatar\/a7888223b6638d2aaf515046d034707e?s=96&d=mm&r=g","width":96,"height":96,"caption":"Love PCB"}},{"@type":"WebPage","@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#webpage","url":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/","name":"Kingboard Price Increase: FR-4 and Prepreg, August 2026","description":"Kingboard's reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/www.bestpcbs.com\/blog\/#website"},"breadcrumb":{"@id":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/#breadcrumblist"},"author":{"@id":"https:\/\/www.bestpcbs.com\/blog\/author\/seo\/#author"},"creator":{"@id":"https:\/\/www.bestpcbs.com\/blog\/author\/seo\/#author"},"datePublished":"2026-08-31T10:54:32+08:00","dateModified":"2026-08-31T10:54:40+08:00"},{"@type":"WebSite","@id":"https:\/\/www.bestpcbs.com\/blog\/#website","url":"https:\/\/www.bestpcbs.com\/blog\/","name":"PCB & MCPCB - Best Technology","description":"More Technical Details & News on PCB, MCPCB & Ceramic PCB from EBest PCB","inLanguage":"en-US","publisher":{"@id":"https:\/\/www.bestpcbs.com\/blog\/#organization"}}]},"og:locale":"en_US","og:site_name":"PCB &amp; MCPCB - EBest PCB - More Technical Details &amp; News on PCB, MCPCB &amp; Ceramic PCB from EBest PCB","og:type":"article","og:title":"Kingboard Price Increase: FR-4 and Prepreg, August 2026","og:description":"Kingboard's reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.","og:url":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/","og:image":"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/08\/logo.png","og:image:secure_url":"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/08\/logo.png","article:published_time":"2026-08-31T02:54:32+00:00","article:modified_time":"2026-08-31T02:54:40+00:00","article:publisher":"https:\/\/www.facebook.com\/Bestpcbs1","twitter:card":"summary_large_image","twitter:site":"@bestpcbs","twitter:title":"Kingboard Price Increase: FR-4 and Prepreg, August 2026","twitter:description":"Kingboard's reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.","twitter:creator":"@bestpcbs","twitter:image":"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2016\/02\/logo.gif"},"aioseo_meta_data":{"post_id":"34749","title":"Kingboard Price Increase: FR-4 and Prepreg, August 2026","description":"Kingboard's reported August 28 price increase raises FR-4 and thick-cloth prepreg by 10%, and thin-cloth prepreg by 20%. See what PCB buyers should check.","keywords":null,"keyphrases":{"focus":{"keyphrase":"","score":0,"analysis":{"keyphraseInTitle":{"score":0,"maxScore":9,"error":1}}},"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"BlogPosting","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":{"faqs":[],"keyPoints":[],"schemas":[],"titles":[],"descriptions":[],"socialPosts":{"email":{"subject":"","preview":"","content":""},"linkedin":[],"twitter":[],"facebook":[],"instagram":[]}},"created":"2026-08-31 02:16:37","updated":"2026-08-31 03:13:29","seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.bestpcbs.com\/blog\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.bestpcbs.com\/blog\/category\/pcb-news\/\" title=\"PCB News\">PCB News<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">\u00bb<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tKingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/www.bestpcbs.com\/blog"},{"label":"PCB News","link":"https:\/\/www.bestpcbs.com\/blog\/category\/pcb-news\/"},{"label":"Kingboard Price Increase: FR-4 and Prepreg Costs Rise in August 2026","link":"https:\/\/www.bestpcbs.com\/blog\/2026\/08\/kingboard-price-increase\/"}],"_links":{"self":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/34749","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/users\/623"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/comments?post=34749"}],"version-history":[{"count":1,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/34749\/revisions"}],"predecessor-version":[{"id":34751,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/34749\/revisions\/34751"}],"wp:attachment":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/media?parent=34749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/categories?post=34749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/tags?post=34749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}