{"id":4877,"date":"2025-03-21T10:18:25","date_gmt":"2025-03-21T02:18:25","guid":{"rendered":"https:\/\/collagensei.com\/?page_id=4877"},"modified":"2026-09-21T17:29:31","modified_gmt":"2026-09-21T09:29:31","slug":"%d9%84-%d9%85%d9%8a%d8%ab%d9%8a%d9%88%d9%86%d9%8a%d9%86-%d9%85%d8%b3%d8%ad%d9%88%d9%82-%d8%a7%d9%84%d9%85%d9%8a%d8%ab%d9%8a%d9%88%d9%86%d9%8a%d9%86","status":"publish","type":"page","link":"https:\/\/collagensei.com\/ar\/bulk-amino-acids-raw-material-supplier\/l-methionine-powder\/","title":{"rendered":"\u0625\u0644 \u0645\u064a\u062b\u064a\u0648\u0646\u064a\u0646 \u0645\u0633\u062d\u0648\u0642 \u0627\u0644\u0645\u064a\u062b\u064a\u0648\u0646\u064a\u0646"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"4877\" class=\"elementor elementor-4877\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-eb646d4 e-con-full e-flex e-con e-parent\" data-id=\"eb646d4\" data-element_type=\"container\" 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textarea{\n  width:100%;\n  min-height:44px;\n  padding:11px 13px;\n  border:1px solid #cbd9e2;\n  border-radius:12px;\n  background:#fbfcfd;\n  color:var(--g-ink);\n  outline:none;\n  box-shadow:0 3px 10px rgba(38,70,91,.035);\n  transition:.2s ease;\n}\n\n.gensei-methionine-page .g-form-card textarea{\n  min-height:150px;\n  resize:vertical;\n}\n\n.gensei-methionine-page .g-form-card input:focus,\n.gensei-methionine-page .g-form-card select:focus,\n.gensei-methionine-page .g-form-card textarea:focus{\n  border-color:var(--g-blue);\n  box-shadow:0 0 0 3px rgba(53,100,134,.09);\n}\n\n.gensei-methionine-page .g-form-card input[type=\"submit\"]{\n  width:100%;\n  min-height:52px;\n  border:0;\n  border-radius:999px;\n  background:var(--g-blue);\n  color:#fff;\n  font-weight:800;\n  cursor:pointer;\n  transition:.2s ease;\n}\n\n.gensei-methionine-page .g-form-card input[type=\"submit\"]:hover{\n  background:var(--g-blue-dark);\n  transform:translateY(-1px);\n}\n\n.gensei-methionine-page 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.gensei-methionine-page .g-inquiry-copy{\n    max-width:none;\n  }\n}\n\n@media(max-width:640px){\n  .gensei-methionine-page .g-wrap{\n    width:calc(100% - 22px);\n  }\n\n  .gensei-methionine-page .g-hero{\n    padding:52px 0 40px;\n  }\n\n  .gensei-methionine-page .g-hero h1{\n    font-size:39px;\n  }\n\n  .gensei-methionine-page .g-lead{\n    font-size:16px;\n  }\n\n  .gensei-methionine-page .g-hero-image{\n    border-radius:18px;\n  }\n\n  .gensei-methionine-page .g-section{\n    padding:52px 0;\n  }\n\n  .gensei-methionine-page .g-overview,\n  .gensei-methionine-page .g-batch,\n  .gensei-methionine-page .g-app-grid,\n  .gensei-methionine-page .g-doc-grid,\n  .gensei-methionine-page .g-selection-list{\n    grid-template-columns:1fr;\n  }\n\n  .gensei-methionine-page .g-batch .g-batch-title{\n    grid-column:auto;\n  }\n\n  .gensei-methionine-page .g-category-nav{\n    gap:9px;\n    flex-wrap:wrap;\n  }\n\n  .gensei-methionine-page .g-category-divider{\n    display:none;\n  }\n\n  .gensei-methionine-page .g-inquiry-section{\n    padding:54px 0;\n  }\n\n  .gensei-methionine-page .g-form-card{\n    padding:23px 18px 20px;\n    border-radius:18px;\n  }\n\n  .gensei-methionine-page .g-inquiry-copy h2{\n    font-size:38px;\n  }\n\n  .gensei-methionine-page table{\n    min-width:860px;\n  }\n\n  .gensei-methionine-page .g-compare-data{\n    grid-template-columns:1fr;\n    gap:4px;\n  }\n}\n<\/style>\n\n\n<div class=\"gensei-methionine-page\">\n\n  <section class=\"g-hero\">\n    <div class=\"g-wrap g-hero-grid\">\n\n      <div>\n        <p class=\"g-eyebrow\">Amino Acid Ingredient<\/p>\n\n        <h1>L-Methionine Supplier | Bulk L-Methionine Powder<\/h1>\n\n        <p class=\"g-lead\">\n          L-Methionine is a sulfur-containing essential amino acid supplied as white crystals\n          or crystalline powder for nutritional, food and pharmaceutical applications.\n        <\/p>\n\n        <div class=\"g-actions\">\n          <a class=\"g-btn g-btn-primary\" href=\"#l-methionine-inquiry\">Request a Quote<\/a>\n        <\/div>\n      <\/div>\n\n      <div class=\"g-hero-image\">\n        <img\n          src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2026\/09\/L-Methionine.webp\"\n          alt=\"L-Methionine powder, CAS 63-68-3\"\n          loading=\"eager\"\n          decoding=\"async\"\n        \/>\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Product Information<\/p>\n        <h2>L-Methionine at a Glance<\/h2>\n        <p>\n          Core chemical and product identification information.\n        <\/p>\n      <\/div>\n\n      <div class=\"g-overview\">\n\n        <div class=\"g-overview-item\">\n          <span>CAS No.<\/span>\n          <strong>63-68-3<\/strong>\n        <\/div>\n\n        <div class=\"g-overview-item\">\n          <span>Molecular Formula<\/span>\n          <strong>C\u2085H\u2081\u2081NO\u2082S<\/strong>\n        <\/div>\n\n        <div class=\"g-overview-item\">\n          <span>Molecular Weight<\/span>\n          <strong>149.21 g\/mol<\/strong>\n        <\/div>\n\n        <div class=\"g-overview-item\">\n          <span>Physical Form<\/span>\n          <strong>White crystals or crystalline powder<\/strong>\n        <\/div>\n\n        <div class=\"g-overview-item\">\n          <span>Standard<\/span>\n          <strong>USP40<\/strong>\n        <\/div>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section g-section-soft\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Product Overview<\/p>\n        <h2>What Is L-Methionine?<\/h2>\n        <p>\n          L-Methionine is the L-form of methionine and an essential sulfur-containing amino acid.\n        <\/p>\n      <\/div>\n\n      <div class=\"g-definition-grid\">\n\n        <article class=\"g-info-card\">\n          <h3>L-Methionine as an Ingredient<\/h3>\n          <p>\n            L-Methionine is used as an amino acid ingredient in nutritional formulations,\n            food applications and pharmaceutical formulations. Product selection depends on\n            the required ingredient identity, applicable standard and analytical specification.\n          <\/p>\n        <\/article>\n\n        <article class=\"g-info-card\">\n          <h3>Crystalline Powder<\/h3>\n          <p>\n            The product is supplied in crystalline form. The specified appearance is\n            white crystals or crystalline powder, providing a defined dry ingredient\n            format for formulation and processing.\n          <\/p>\n        <\/article>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Product Batch<\/p>\n        <h2>L-Methionine Batch Information<\/h2>\n      <\/div>\n\n      <div class=\"g-batch\">\n\n        <div class=\"g-batch-title\">\n          <span>Product<\/span>\n          <strong>L-Methionine<\/strong>\n        <\/div>\n\n        <div>\n          <span>Batch No.<\/span>\n          <strong>20251221<\/strong>\n        <\/div>\n\n        <div>\n          <span>Quantity<\/span>\n          <strong>2,000 kg<\/strong>\n        <\/div>\n\n        <div>\n          <span>Manufacture Date<\/span>\n          <strong>2025.12.21<\/strong>\n        <\/div>\n\n        <div>\n          <span>Retest Date<\/span>\n          <strong>2027.12.20<\/strong>\n        <\/div>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section g-section-soft\" id=\"l-methionine-specification\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Technical Specification<\/p>\n        <h2>L-Methionine Specification &amp; COA Results<\/h2>\n        <p>\n          Analytical requirements and corresponding batch results.\n        <\/p>\n      <\/div>\n\n      <div class=\"g-table-wrap\">\n\n        <table>\n          <thead>\n            <tr>\n              <th>Test Item<\/th>\n              <th>Specification<\/th>\n              <th>Result<\/th>\n            <\/tr>\n          <\/thead>\n\n          <tbody>\n\n            <tr class=\"g-group\">\n              <td colspan=\"3\">Chemical &amp; Physical Properties<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Appearance<\/td>\n              <td>White crystals or crystalline powder<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Identification<\/td>\n              <td>Infrared Absorption<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Specific Rotation<\/td>\n              <td>+22.4\u00b0 to +24.7\u00b0<\/td>\n              <td class=\"g-result\">+23.8\u00b0<\/td>\n            <\/tr>\n\n            <tr>\n              <td>pH<\/td>\n              <td>5.6 to 6.1<\/td>\n              <td class=\"g-result\">5.80<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Loss on Drying<\/td>\n              <td>Not more than 0.30%<\/td>\n              <td class=\"g-result\">0.10%<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Residue on Ignition<\/td>\n              <td>Not more than 0.40%<\/td>\n              <td class=\"g-result\">0.04%<\/td>\n            <\/tr>\n\n\n            <tr class=\"g-group\">\n              <td colspan=\"3\">Inorganic Components<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Chloride<\/td>\n              <td>Not more than 0.05%<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Sulfate<\/td>\n              <td>Not more than 0.03%<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Iron<\/td>\n              <td>Not more than 30 ppm<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Heavy Metals<\/td>\n              <td>Not more than 15 ppm<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n\n            <tr class=\"g-group\">\n              <td colspan=\"3\">Impurities &amp; Assay<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Individual Impurity<\/td>\n              <td>Not more than 0.5%<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Total Impurities<\/td>\n              <td>Not more than 2.0%<\/td>\n              <td class=\"g-result\">Conforms<\/td>\n            <\/tr>\n\n            <tr>\n              <td>Assay<\/td>\n              <td>98.5% to 101.5%<\/td>\n              <td class=\"g-result\">99.3%<\/td>\n            <\/tr>\n\n          <\/tbody>\n        <\/table>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Product Focus<\/p>\n        <h2>Why Choose L-Methionine?<\/h2>\n        <p>\n          L-Methionine is supplied as a defined amino acid ingredient for nutritional,\n          food and pharmaceutical applications, with product specifications available\n          for quality and formulation review.\n        <\/p>\n      <\/div>\n\n      <div class=\"g-compare\">\n\n        <article class=\"g-compare-card\">\n          <h3>Defined Ingredient Identity<\/h3>\n\n          <p>\n            Our product is <strong>L-Methionine<\/strong>, identified by CAS No. 63-68-3\n            and supplied in white crystals or crystalline powder form.\n          <\/p>\n\n          <div class=\"g-compare-data\">\n            <span>CAS No.<\/span>\n            <strong>63-68-3<\/strong>\n\n            <span>Form<\/span>\n            <strong>L-Methionine<\/strong>\n          <\/div>\n        <\/article>\n\n        <article class=\"g-compare-card\">\n          <h3>Specification &amp; Quality<\/h3>\n\n          <p>\n            Product qualification can be supported with batch-level analytical data,\n            applicable product standards and a Certificate of Analysis.\n          <\/p>\n\n          <div class=\"g-compare-data\">\n            <span>Standard<\/span>\n            <strong>USP40<\/strong>\n\n            <span>Documentation<\/span>\n            <strong>COA Available<\/strong>\n          <\/div>\n        <\/article>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section g-section-soft\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Application Areas<\/p>\n        <h2>L-Methionine Applications<\/h2>\n        <p>\n          Application requirements determine the appropriate specification and product standard.\n        <\/p>\n      <\/div>\n\n      <div class=\"g-app-grid\">\n\n        <article class=\"g-app\">\n          <span class=\"g-app-num\">01<\/span>\n          <h3>Dietary Supplements<\/h3>\n          <p>\n            Used as an amino acid ingredient in nutritional products, amino acid formulas,\n            capsules, tablets and powder formulations.\n          <\/p>\n        <\/article>\n\n\n        <article class=\"g-app\">\n          <span class=\"g-app-num\">02<\/span>\n          <h3>Food Applications<\/h3>\n          <p>\n            Used in food applications where L-Methionine is selected as a nutritional\n            ingredient or for specified food-related functions.\n          <\/p>\n        <\/article>\n\n\n        <article class=\"g-app\">\n          <span class=\"g-app-num\">03<\/span>\n          <h3>Pharmaceutical Applications<\/h3>\n          <p>\n            Used in pharmaceutical formulations where the required ingredient identity\n            and applicable quality standard are specified.\n          <\/p>\n        <\/article>\n\n\n        <article class=\"g-app\">\n          <span class=\"g-app-num\">04<\/span>\n          <h3>Amino Acid Formulas<\/h3>\n          <p>\n            Included in amino acid combinations where L-Methionine is specified as part\n            of the finished formulation.\n          <\/p>\n        <\/article>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Product Selection<\/p>\n        <h2>How to Select L-Methionine Powder<\/h2>\n        <p>\n          Start with the required product identity and standard, then confirm the specification and packaging requirements.\n        <\/p>\n      <\/div>\n\n      <div class=\"g-selection\">\n\n        <div class=\"g-selection-main\">\n\n          <h3>Key Selection Points<\/h3>\n\n          <p>\n            A suitable L-Methionine product should match the requirements of the finished formulation\n            and the quality specification used for ingredient qualification.\n          <\/p>\n\n          <div class=\"g-selection-list\">\n\n            <div class=\"g-selection-item\">\n              <strong>Ingredient Identity<\/strong>\n              <span>Confirm that the required material is L-Methionine and matches the specification for the intended application.<\/span>\n            <\/div>\n\n            <div class=\"g-selection-item\">\n              <strong>Product Standard<\/strong>\n              <span>Select the applicable standard for the intended formulation and market.<\/span>\n            <\/div>\n\n            <div class=\"g-selection-item\">\n              <strong>Analytical Specification<\/strong>\n              <span>Review the required assay, physical parameters and impurity limits.<\/span>\n            <\/div>\n\n            <div class=\"g-selection-item\">\n              <strong>Packaging<\/strong>\n              <span>Confirm the pack configuration required for handling, storage and production.<\/span>\n            <\/div>\n\n          <\/div>\n\n        <\/div>\n\n\n        <div class=\"g-selection-side\">\n\n          <h3>Product Documentation<\/h3>\n\n          <p>\n            Product documentation supports ingredient qualification and specification review.\n          <\/p>\n\n          <div class=\"g-facts\">\n\n            <div class=\"g-fact\">\n              <span>Analytical Document<\/span>\n              <strong>COA<\/strong>\n            <\/div>\n\n            <div class=\"g-fact\">\n              <span>Product Standard<\/span>\n              <strong>USP40<\/strong>\n            <\/div>\n\n          <\/div>\n\n        <\/div>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section g-section-soft\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-section-head\">\n        <p class=\"g-kicker\">Product Documentation<\/p>\n        <h2>L-Methionine Documentation<\/h2>\n        <p>\n          Product information for specification review and ingredient qualification.\n        <\/p>\n      <\/div>\n\n      <div class=\"g-doc-grid\">\n\n        <article class=\"g-doc\">\n          <h3>Certificate of Analysis<\/h3>\n          <p>\n            Batch-level analytical information covering identity, physical properties,\n            inorganic components, impurities and assay.\n          <\/p>\n        <\/article>\n\n        <article class=\"g-doc\">\n          <h3>Product Specification<\/h3>\n          <p>\n            Defined analytical requirements for evaluating L-Methionine against the required product standard.\n          <\/p>\n        <\/article>\n\n        <article class=\"g-doc\">\n          <h3>Quality Information<\/h3>\n          <p>\n            Product quality is assessed through chemical identification, specific rotation,\n            assay and specified impurity controls.\n          <\/p>\n        <\/article>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-section\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-packaging\">\n\n        <article class=\"g-pack-card\">\n          <p class=\"g-kicker\">Packaging<\/p>\n\n          <h3>25 KG \/ Drum<\/h3>\n\n          <p>\n            The product is packed in a drum with a 2-tier polyethylene bag as the inner packaging.\n          <\/p>\n\n          <div class=\"g-pack-value\">\n            25 KG \/ Drum\n          <\/div>\n        <\/article>\n\n\n        <article class=\"g-pack-card\">\n          <p class=\"g-kicker\">Storage<\/p>\n\n          <h3>Storage Conditions<\/h3>\n\n          <ul class=\"g-storage-list\">\n            <li>Keep the container dry and tightly closed.<\/li>\n            <li>Keep in a cool, well-ventilated place.<\/li>\n            <li>Keep away from heat and oxidizing agents.<\/li>\n          <\/ul>\n        <\/article>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-category-section\" aria-label=\"Amino acid ingredient category\">\n    <div class=\"g-wrap\">\n\n      <div class=\"g-category-nav\">\n        <span class=\"g-category-label\">Amino Acid Ingredients<\/span>\n\n        <span class=\"g-category-divider\" aria-hidden=\"true\"><\/span>\n\n        <a\n          href=\"\/bulk-amino-acids-raw-material-supplier\/\"\n          class=\"g-category-link\"\n        >\n          Explore the full ingredient range\n          <span aria-hidden=\"true\">\u2192<\/span>\n        <\/a>\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n\n  <section class=\"g-inquiry-section\" id=\"l-methionine-inquiry\">\n    <div class=\"g-wrap g-inquiry-grid\">\n\n      <div class=\"g-inquiry-copy\">\n\n        <div class=\"g-inquiry-pill\">L-Methionine Ingredient Inquiry<\/div>\n\n        <h2>Request L-Methionine Pricing &amp; Product Information<\/h2>\n\n        <p>\n          Share your required quantity, specification, application and destination for L-Methionine.\n        <\/p>\n\n        <div class=\"g-inquiry-points\">\n          <span class=\"g-inquiry-point\">Specification<\/span>\n          <span class=\"g-inquiry-point\">COA<\/span>\n          <span class=\"g-inquiry-point\">Packaging<\/span>\n          <span class=\"g-inquiry-point\">Quotation<\/span>\n        <\/div>\n\n      <\/div>\n\n\n      <div class=\"g-form-card\">\n        <h3>Send Your Inquiry<\/h3>\n        \n<div class=\"wpcf7 no-js\" id=\"wpcf7-f74-o1\" lang=\"zh-CN\" dir=\"ltr\" data-wpcf7-id=\"74\">\n<div class=\"screen-reader-response\"><p role=\"status\" aria-live=\"polite\" aria-atomic=\"true\"><\/p> <ul><\/ul><\/div>\n<form action=\"\/ar\/wp-json\/wp\/v2\/pages\/4877#wpcf7-f74-o1\" method=\"post\" class=\"wpcf7-form init\" aria-label=\"\u7559\u8a00\u8868\u5355\" novalidate=\"novalidate\" data-status=\"init\">\n<fieldset class=\"hidden-fields-container\"><input type=\"hidden\" name=\"_wpcf7\" value=\"74\" \/><input type=\"hidden\" name=\"_wpcf7_version\" value=\"6.1.7\" \/><input type=\"hidden\" name=\"_wpcf7_locale\" value=\"zh_CN\" \/><input type=\"hidden\" name=\"_wpcf7_unit_tag\" value=\"wpcf7-f74-o1\" \/><input type=\"hidden\" name=\"_wpcf7_container_post\" value=\"0\" \/><input type=\"hidden\" name=\"_wpcf7_posted_data_hash\" value=\"\" \/>\n<\/fieldset>\n<div class=\"stay-touch\">\n\t<ul>\n\t\t<li>\n\t\t\t<p><label> Name: <span class=\"wpcf7-form-control-wrap\" data-name=\"your-name\"><input size=\"40\" maxlength=\"400\" class=\"wpcf7-form-control wpcf7-text 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class=\"wpcf7-form-control wpcf7-text wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" value=\"\" type=\"text\" name=\"your-tel\" \/><\/span><\/label>\n\t\t\t<\/p>\n\t\t<\/li>\n\t\t<li>\n\t\t\t<p><label> Message: <span class=\"wpcf7-form-control-wrap\" data-name=\"your-message\"><textarea cols=\"40\" rows=\"10\" maxlength=\"2000\" class=\"wpcf7-form-control wpcf7-textarea wpcf7-validates-as-required\" aria-required=\"true\" aria-invalid=\"false\" name=\"your-message\"><\/textarea><\/span><\/label>\n\t\t\t<\/p>\n\t\t<\/li>\n\t\t<li style=\"text-align:center\">\n\t\t\t<p><input class=\"wpcf7-form-control wpcf7-submit has-spinner\" type=\"submit\" value=\"SEND\" \/>\n\t\t\t<\/p>\n\t\t<\/li>\n\t<\/ul>\n<\/div><div class=\"wpcf7-response-output\" aria-hidden=\"true\"><\/div>\n<\/form>\n<\/div>\n\n      <\/div>\n\n    <\/div>\n  <\/section>\n\n<\/div><script type=\"module\" 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