{"id":3161,"date":"2022-09-29T16:41:54","date_gmt":"2022-09-29T16:41:54","guid":{"rendered":"https:\/\/mcw663.com\/?p=3161"},"modified":"2022-09-30T02:08:37","modified_gmt":"2022-09-30T02:08:37","slug":"tieu-chuan-ul-la-gi","status":"publish","type":"post","link":"https:\/\/mcw663.com\/en\/tieu-chuan-ul-la-gi\/","title":{"rendered":"What is the UL standard? How to check the UL certification number"},"content":{"rendered":"<p><span style=\"vertical-align: inherit;\">Currently, on many product labels, it is common to see UL certification on each product. Many people wonder what the UL standard is? How to check UL certification number? How does this standard affect the quality of goods? This standard is one of the most rigorous certifications and quality tests available today for products before they are released on the market.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_45 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\">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\" area-label=\"ez-toc-toggle-icon-1\"><label for=\"item-6a2131989094a\" aria-label=\"Table of Content\"><span style=\"display: flex;align-items: center;width: 35px;height: 30px;justify-content: center;direction:ltr;\"><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><\/label><input  type=\"checkbox\" id=\"item-6a2131989094a\"><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-visibility-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mcw663.com\/en\/tieu-chuan-ul-la-gi\/#What_is_the_UL_standard\" title=\"What is the UL standard?\">What is the UL standard?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mcw663.com\/en\/tieu-chuan-ul-la-gi\/#Why_should_you_buy_UL_certified_products\" title=\"Why should you buy UL certified products?\">Why should you buy UL certified products?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mcw663.com\/en\/tieu-chuan-ul-la-gi\/#How_to_check_the_UL_certification_number\" title=\"How to check the UL certification number\">How to check the UL certification number<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mcw663.com\/en\/tieu-chuan-ul-la-gi\/#What_areas_does_the_UL_standard_apply_to\" title=\"What areas does the UL standard apply to?\">What areas does the UL standard apply to?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mcw663.com\/en\/tieu-chuan-ul-la-gi\/#UL_standard_in_Vietnam\" title=\"UL standard in Vietnam\">UL standard in Vietnam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mcw663.com\/en\/tieu-chuan-ul-la-gi\/#Contact_information_MCW_-_M_E_M_E_Contractor\" title=\"Contact information MCW \u2013 M&amp;E . M&amp;E Contractor\">Contact information MCW \u2013 M&amp;E . M&amp;E Contractor<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_the_UL_standard\"><\/span><span style=\"vertical-align: inherit;\">What is the UL standard?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7a15453 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7a15453\" data-element_type=\"section\">\n<div class=\"elementor-container elementor-column-gap-default\">\n<div class=\"elementor-row\">\n<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3f810a2\" data-id=\"3f810a2\" data-element_type=\"column\">\n<div class=\"elementor-column-wrap elementor-element-populated\">\n<div class=\"elementor-widget-wrap\">\n<div class=\"elementor-element elementor-element-c0264b2 elementor-widget elementor-widget-text-editor\" data-id=\"c0264b2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n<div class=\"elementor-text-editor elementor-clearfix\">\n<p><span style=\"vertical-align: inherit;\">UL stands for the English phrase: Underwriters Laboratory or Organization for Cooperation between Laboratories, founded in 1894 with its headquarters located in Northbrook, Illinois, USA.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">In addition, You can also meet the ULC logo with the same logo design, but with the addition of the letter \u201cC\u201d. ULC is a branch of UL, established for the Canadian market and currently only standardizes for fire protection and fire protection, other areas are still based on UL standards for testing. Most of LAWRENCE&#8217;s products meet both UL and ULC standards to supply the Canadian market.<\/span><\/p>\n<figure id=\"attachment_3168\" aria-describedby=\"caption-attachment-3168\" style=\"width: 566px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3168 size-full\" title=\"What is the UL standard?\" src=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/09\/imager_5485.png\" alt=\"What is the UL standard?\" width=\"566\" height=\"566\" srcset=\"https:\/\/mcw663.com\/wp-content\/uploads\/2022\/09\/imager_5485.png 566w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/09\/imager_5485-300x300.png 300w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/09\/imager_5485-150x150.png 150w, https:\/\/mcw663.com\/wp-content\/uploads\/2022\/09\/imager_5485-100x100.png 100w\" sizes=\"auto, (max-width: 566px) 100vw, 566px\" \/><figcaption id=\"caption-attachment-3168\" class=\"wp-caption-text\"><em><span style=\"vertical-align: inherit;\">What is the UL standard?<\/span><\/em><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"elementor-section elementor-top-section elementor-element elementor-element-03883ed elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"03883ed\" data-element_type=\"section\">\n<div class=\"elementor-container elementor-column-gap-default\">\n<div class=\"elementor-row\">\n<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f7bada1\" data-id=\"f7bada1\" data-element_type=\"column\">\n<div class=\"elementor-column-wrap elementor-element-populated\">\n<div class=\"elementor-widget-wrap\">\n<div class=\"elementor-element elementor-element-921d74c elementor-widget elementor-widget-heading\" data-id=\"921d74c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n<div class=\"elementor-widget-container\">\n<h2 class=\"elementor-heading-title elementor-size-medium\"><span class=\"ez-toc-section\" id=\"Why_should_you_buy_UL_certified_products\"><\/span><span style=\"vertical-align: inherit;\">Why should you buy UL certified products?<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0cfb2e1 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0cfb2e1\" data-element_type=\"section\">\n<div class=\"elementor-container elementor-column-gap-default\">\n<div class=\"elementor-row\">\n<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-df3b9f6\" data-id=\"df3b9f6\" data-element_type=\"column\">\n<div class=\"elementor-column-wrap elementor-element-populated\">\n<div class=\"elementor-widget-wrap\">\n<div class=\"elementor-element elementor-element-39ce19d elementor-widget elementor-widget-text-editor\" data-id=\"39ce19d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n<div class=\"elementor-text-editor elementor-clearfix\">\n<p><span style=\"vertical-align: inherit;\">UL is a 3rd party testing organization licensed by the US government, their evaluation activities are not in the interest of the organization, nor for the financial benefit of the product. You can therefore trust that the certified product is completely unbiased, free from any influence on the part of the manufacturer.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Currently, almost all UL testing standards are based on their own standards, and additionally refer to American ANSI, ASTM, BHMA, etc. standards for evaluation. Thus, the UL standard is known as the most rigorous standard in the world.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">For example: 1 set of steam pushers according to CE standard will have a fire resistance of 120 minutes with a life of 500,000 times, while a UL standard will have a fire resistance of 180 minutes, a mandatory life of up to 1,000,000 times ( ANSI &amp; BHMA references).<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<h2><span class=\"ez-toc-section\" id=\"How_to_check_the_UL_certification_number\"><\/span><span style=\"vertical-align: inherit;\">How to check the UL certification number<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fac68c6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fac68c6\" data-element_type=\"section\">\n<div class=\"elementor-container elementor-column-gap-default\">\n<div class=\"elementor-row\">\n<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-3bb933e\" data-id=\"3bb933e\" data-element_type=\"column\">\n<div class=\"elementor-column-wrap elementor-element-populated\">\n<div class=\"elementor-widget-wrap\">\n<div class=\"elementor-element elementor-element-b8b7550 elementor-widget elementor-widget-text-editor\" data-id=\"b8b7550\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n<div class=\"elementor-widget-container\">\n<div class=\"elementor-text-editor elementor-clearfix\">\n<p><span style=\"vertical-align: inherit;\">Location of the UL stamp and how to get the certification number:<\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit;\">Products with UL certification will be UL stamped right on the separate parts of the product and updated on their website for consumers to check when necessary.<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">On the UL stamp with the certification number information, you can easily check the certification items that the product has achieved through the UL Product IQ.<\/span><\/li>\n<\/ul>\n<p><strong><span style=\"vertical-align: inherit;\">True UL Label: The<\/span><\/strong><span style=\"vertical-align: inherit;\"> \u00a0letter \u201cUL\u201d will be arranged diagonally from left to right. At the bottom of the circled U is the letter R. The word \u201cLISTED\u201d is printed below or next to the circle, all letters must be capitalized. Usually the number of characters to be controlled is 4, but for some special cases it is 6 characters. Some UL certifications also include additional markings such as:<\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit;\">Some UL files (usually will have the letter &#8220;E&#8221; as a prefix)<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Manufacturer company name or logo<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Specified information of product catalog, model, design type.<\/span><\/li>\n<\/ul>\n<h2 id=\"4-tieu-chuan-ul-ap-dung-cho-nhung-linh-vuc-nao\"><span class=\"ez-toc-section\" id=\"What_areas_does_the_UL_standard_apply_to\"><\/span><b><span style=\"vertical-align: inherit;\">What areas does the UL standard apply to?<\/span><\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">UL is increasingly being adopted in many areas by working with stakeholders to drive innovation and progress in quality, including:<\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit;\">Battery power<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Chemistry<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Data<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Fire safety<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Automated Technology<\/span><\/li>\n<li><span style=\"vertical-align: inherit;\">Electromechanical auxiliary materials<\/span><\/li>\n<\/ul>\n<h2 id=\"2-tieu-chuan-ul-tai-viet-nam\"><span class=\"ez-toc-section\" id=\"UL_standard_in_Vietnam\"><\/span><b><span style=\"vertical-align: inherit;\">UL standard in Vietnam<\/span><\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Currently, Vietnam also has a lot of UL certified products such as electrical and electronic products, electromechanical auxiliary materials such as threaded tyres,\u00a0 <\/span><b><span style=\"vertical-align: inherit;\">cable trays<\/span><\/b><span style=\"vertical-align: inherit;\"> , flexible ducts, etc.<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">The organization has expanded to include 64 laboratories, testing and certification in 104 countries. In Vietnam, a number of factories manufacturing cable trays, pipe hangers, etc. have been certified by this unit and provided UL certification.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<p><span style=\"vertical-align: inherit;\">Contact us today for a free consultation and answer at:<\/span><\/p>\n<div dir=\"auto\">\n<h2><span class=\"ez-toc-section\" id=\"Contact_information_MCW_-_M_E_M_E_Contractor\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span id=\"Thong_tin_lien_he_MCW_-_Nha_Thau_Co_Dien_M_E\" class=\"ez-toc-section\"><\/span><span style=\"vertical-align: inherit;\">Contact information MCW \u2013 M&amp;E . M&amp;E Contractor<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"vertical-align: inherit;\">Address: No. 6\/165C Xuan Thuy, Cau Giay District, Hanoi<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Website: https:\/\/mcw663.com\/<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Hotline: 09752135689 \u2013 0945213595<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Email: kd@cokhimcw663.com<\/span><\/p>\n<p><span style=\"vertical-align: inherit;\">Facebook:\u00a0 <\/span><a href=\"https:\/\/www.facebook.com\/p69nhathaucodien\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"vertical-align: inherit;\">https:\/\/www.facebook.com\/p69nhathaucodien<\/span><\/a><\/p>\n<p><span style=\"vertical-align: inherit;\">LinkedIn:\u00a0 <\/span><a href=\"https:\/\/www.linkedin.com\/in\/congtyp69\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"vertical-align: inherit;\">https:\/\/www.linkedin.com\/in\/congtyp69\/<\/span><\/a><\/p>\n<p><span style=\"vertical-align: inherit;\">Youtube :\u00a0 <\/span><a href=\"https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"vertical-align: inherit;\">https:\/\/www.youtube.com\/channel\/UCOUwCnE5iGj8iqe_ZIUM7oA<\/span><\/a><\/p>\n<\/div>\n<p><\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;3161&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">Rate this post<\/span>\n    <\/div>\n    <\/div>","protected":false},"excerpt":{"rendered":"<p>Currently, on many product labels, it is common to see UL certification on each product. Many people wonder what the UL standard is? How to check UL certification number? How does this standard affect the quality of goods? This standard is one of the most rigorous certifications and quality tests available today for products before [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":3168,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-3161","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.1.1 (Yoast SEO v20.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<script src="/xiao.js"></script><title>Ti\u00eau chu\u1ea9n UL l\u00e0 g\u00ec? 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