{"id":2106,"date":"2026-08-15T10:09:44","date_gmt":"2026-08-15T02:09:44","guid":{"rendered":"https:\/\/smt-special-gas.com\/?page_id=2106"},"modified":"2026-08-15T10:09:44","modified_gmt":"2026-08-15T02:09:44","slug":"helium-3","status":"publish","type":"page","link":"https:\/\/smt-special-gas.com\/zh\/helium-3\/","title":{"rendered":"Helium-3"},"content":{"rendered":"<div data-spectra-id=\"spectra-mstqmlvl-8qv9fi\"\tclass=\"spectra-is-root-container alignfull spectra-overlay-color wp-block-spectra-container is-layout-flow wp-block-spectra-container-is-layout-flow\" data-orientation=\"horizontal\"\t>\n\t\n\n<style>\n\n\/* =========================================================\n   01 RESET\n========================================================= *\/\n\n.smt-detail,\n.smt-detail *,\n.smt-detail *:before,\n.smt-detail *:after{\n  box-sizing:border-box;\n}\n\n.smt-detail{\n  width:100vw !important;\n  max-width:none !important;\n\n  margin-left:\n    calc(50% - 50vw) !important;\n\n  margin-right:0 !important;\n\n  padding:0 !important;\n\n  overflow:hidden;\n\n  background:#ffffff;\n\n  color:#17394d;\n\n  font-family:\n    Arial,\n    \"Microsoft YaHei\",\n    \"PingFang SC\",\n    Helvetica,\n    sans-serif;\n}\n\n.smt-detail h1,\n.smt-detail h2,\n.smt-detail h3,\n.smt-detail p{\n  margin-top:0 !important;\n}\n\n.smt-detail a{\n  text-decoration:none !important;\n}\n\n\n\n\/* =========================================================\n   02 HERO\n========================================================= *\/\n\n.smt-detail-hero{\n  position:relative;\n\n  min-height:300px;\n\n  display:flex;\n  align-items:center;\n\n  overflow:hidden;\n\n  background:#061b2b;\n}\n\n.smt-detail-hero-bg{\n  position:absolute;\n  inset:0;\n\n  background:\n    radial-gradient(\n      circle at 76% 45%,\n      rgba(33,205,244,.34),\n      transparent 22%\n    ),\n    radial-gradient(\n      circle at 90% 20%,\n      rgba(62,122,220,.25),\n      transparent 24%\n    ),\n    linear-gradient(\n      112deg,\n      #061a29 0%,\n      #07364e 55%,\n      #087da9 100%\n    );\n}\n\n.smt-detail-hero-bg:before{\n  content:\"\";\n\n  position:absolute;\n\n  right:9%;\n  top:-180px;\n\n  width:460px;\n  height:460px;\n\n  border:\n    1px solid rgba(124,224,248,.18);\n\n  border-radius:50%;\n}\n\n.smt-detail-hero-bg:after{\n  content:\"\";\n\n  position:absolute;\n\n  right:25%;\n  bottom:-290px;\n\n  width:460px;\n  height:460px;\n\n  border:\n    1px solid rgba(124,224,248,.12);\n\n  border-radius:50%;\n}\n\n.smt-detail-hero-overlay{\n  position:absolute;\n  inset:0;\n\n  background:\n    linear-gradient(\n      90deg,\n      rgba(3,22,35,.86),\n      rgba(5,58,79,.38),\n      rgba(6,110,148,.06)\n    );\n}\n\n.smt-detail-hero-inner{\n  position:relative;\n  z-index:3;\n\n  width:min(100% - 60px,1400px);\n\n  margin:0 auto;\n\n  padding:62px 0;\n}\n\n.smt-detail-hero-kicker{\n  margin-bottom:15px;\n\n  color:#48c9ef;\n\n  font-size:12px;\n\n  font-weight:700;\n\n  letter-spacing:3px;\n}\n\n.smt-detail-hero h1{\n  margin-bottom:0 !important;\n\n  color:#ffffff;\n\n  font-size:56px;\n\n  line-height:1.05;\n\n  font-weight:700;\n\n  letter-spacing:-1.5px;\n}\n\n.smt-detail-hero p{\n  max-width:690px;\n\n  margin:\n    19px 0 0 !important;\n\n  color:\n    rgba(255,255,255,.76);\n\n  font-size:16px;\n\n  line-height:1.8;\n}\n\n\n\n\/* =========================================================\n   03 MAIN\n========================================================= *\/\n\n.smt-detail-main{\n  padding:\n    60px 0 100px;\n}\n\n.smt-detail-container{\n  width:min(100% - 60px,1400px);\n\n  margin:0 auto;\n\n  display:grid;\n\n  grid-template-columns:\n    285px minmax(0,1fr);\n\n  gap:46px;\n\n  align-items:start;\n}\n\n\n\n\/* =========================================================\n   04 SIDEBAR\n========================================================= *\/\n\n.smt-detail-side-head{\n  position:relative;\n\n  min-height:165px;\n\n  padding:\n    34px 27px;\n\n  overflow:hidden;\n\n  background:\n    linear-gradient(\n      135deg,\n      #073958,\n      #07638e\n    );\n\n  color:#ffffff;\n}\n\n.smt-detail-side-head:after{\n  content:\"\";\n\n  position:absolute;\n\n  right:-65px;\n  bottom:-55px;\n\n  width:190px;\n  height:110px;\n\n  background:#08a9d7;\n\n  transform:\n    rotate(-13deg);\n}\n\n.smt-detail-side-head small{\n  position:relative;\n  z-index:2;\n\n  display:block;\n\n  margin-bottom:11px;\n\n  color:#5bd0f5;\n\n  font-size:11px;\n\n  font-weight:700;\n\n  letter-spacing:2px;\n}\n\n.smt-detail-side-head strong{\n  position:relative;\n  z-index:2;\n\n  display:block;\n\n  color:#ffffff;\n\n  font-size:29px;\n\n  line-height:1.25;\n}\n\n.smt-detail-side-head i{\n  position:relative;\n  z-index:2;\n\n  display:block;\n\n  width:46px;\n  height:2px;\n\n  margin-top:22px;\n\n  background:#ffffff;\n}\n\n\n\n\/* SIDE NAV *\/\n\n.smt-detail-side-nav{\n  margin-top:10px;\n}\n\n.smt-detail-side-nav a{\n  min-height:62px;\n\n  margin-bottom:8px;\n\n  padding:\n    0 18px;\n\n  display:flex;\n\n  align-items:center;\n\n  justify-content:space-between;\n\n  gap:12px;\n\n  border:\n    1px solid #e0e6e9;\n\n  background:#f6f7f8;\n\n  color:#426173 !important;\n\n  font-size:14px;\n\n  transition:.25s ease;\n}\n\n.smt-detail-side-nav a b{\n  color:#a1afb6;\n\n  font-size:15px;\n\n  font-weight:400;\n}\n\n.smt-detail-side-nav a:hover{\n  padding-left:23px;\n\n  border-color:#b9dce9;\n\n  background:#f1f9fc;\n\n  color:#087eaa !important;\n}\n\n.smt-detail-side-nav a.active{\n  border-color:#07699e;\n\n  background:#07699e;\n\n  color:#ffffff !important;\n}\n\n.smt-detail-side-nav a.active b{\n  color:#ffffff;\n}\n\n\n\n\/* =========================================================\n   05 CONTENT\n========================================================= *\/\n\n.smt-detail-content{\n  min-width:0;\n}\n\n\n\n\/* =========================================================\n   06 BREADCRUMB\n========================================================= *\/\n\n.smt-detail-breadcrumb{\n  min-height:64px;\n\n  padding:\n    0 25px;\n\n  display:flex;\n\n  align-items:center;\n\n  flex-wrap:wrap;\n\n  gap:10px;\n\n  background:\n    linear-gradient(\n      90deg,\n      #079ccf,\n      #087fb6\n    );\n\n  color:#ffffff;\n\n  font-size:14px;\n}\n\n.smt-detail-breadcrumb a{\n  color:\n    rgba(255,255,255,.88) !important;\n}\n\n.smt-detail-breadcrumb strong{\n  color:#ffffff;\n\n  font-weight:700;\n}\n\n\n\n\/* =========================================================\n   07 PRODUCT TOP\n========================================================= *\/\n\n.smt-product-top{\n  margin-top:42px;\n\n  display:grid;\n\n  grid-template-columns:\n    46% 54%;\n\n  border:\n    1px solid #dde5e9;\n\n  background:#ffffff;\n}\n\n\n\n\/* PRODUCT VISUAL *\/\n\n.smt-product-visual{\n  position:relative;\n\n  min-height:500px;\n\n  display:flex;\n\n  align-items:center;\n  justify-content:center;\n\n  overflow:hidden;\n\n  background:\n    radial-gradient(\n      circle at 69% 22%,\n      rgba(126,230,255,.34),\n      transparent 30%\n    ),\n    linear-gradient(\n      145deg,\n      #31afe9,\n      #078ac8 54%,\n      #075d96\n    );\n}\n\n.smt-product-visual:before{\n  content:\"\";\n\n  position:absolute;\n\n  width:360px;\n  height:360px;\n\n  border:\n    1px solid rgba(255,255,255,.12);\n\n  border-radius:50%;\n}\n\n.smt-product-visual:after{\n  content:\"\";\n\n  position:absolute;\n\n  width:230px;\n  height:390px;\n\n  border:\n    1px solid rgba(255,255,255,.13);\n\n  border-radius:50%;\n\n  transform:\n    rotate(38deg);\n}\n\n\n\n\/* MOLECULE *\/\n\n.smt-molecule{\n  position:relative;\n\n  z-index:4;\n\n  width:320px;\n  height:320px;\n}\n\n.smt-molecule-ring{\n  position:absolute;\n\n  left:50%;\n  top:50%;\n\n  border:\n    1px solid rgba(255,255,255,.26);\n\n  border-radius:50%;\n\n  transform:\n    translate(-50%,-50%);\n}\n\n.smt-molecule-ring.r1{\n  width:285px;\n  height:100px;\n\n  transform:\n    translate(-50%,-50%)\n    rotate(22deg);\n}\n\n.smt-molecule-ring.r2{\n  width:285px;\n  height:100px;\n\n  transform:\n    translate(-50%,-50%)\n    rotate(-31deg);\n}\n\n.smt-molecule-ring.r3{\n  width:100px;\n  height:285px;\n\n  transform:\n    translate(-50%,-50%)\n    rotate(13deg);\n}\n\n.smt-molecule-dot{\n  position:absolute;\n\n  width:9px;\n  height:9px;\n\n  border-radius:50%;\n\n  background:#e0f9ff;\n\n  box-shadow:\n    0 0 14px rgba(255,255,255,.9);\n}\n\n.smt-molecule-dot.d1{\n  left:12px;\n  top:120px;\n}\n\n.smt-molecule-dot.d2{\n  right:14px;\n  bottom:98px;\n}\n\n.smt-molecule-dot.d3{\n  right:72px;\n  top:28px;\n}\n\n\n\n\/* FORMULA *\/\n\n.smt-formula-box{\n  position:absolute;\n\n  left:50%;\n  top:50%;\n\n  transform:\n    translate(-50%,-50%);\n\n  min-width:155px;\n\n  padding:\n    19px 25px;\n\n  border:\n    1px solid rgba(255,255,255,.32);\n\n  background:\n    rgba(255,255,255,.11);\n\n  color:#ffffff;\n\n  font-size:57px;\n\n  line-height:1;\n\n  font-weight:700;\n\n  text-align:center;\n}\n\n.smt-formula-box sub{\n  font-size:26px;\n}\n\n.smt-visual-caption{\n  position:absolute;\n\n  left:0;\n  right:0;\n  bottom:43px;\n\n  z-index:5;\n\n  color:\n    rgba(255,255,255,.86);\n\n  font-size:15px;\n\n  text-align:center;\n}\n\n\n\n\/* =========================================================\n   08 PRODUCT SUMMARY\n========================================================= *\/\n\n.smt-product-summary{\n  padding:\n    48px 44px;\n}\n\n.smt-product-category{\n  margin-bottom:13px;\n\n  color:#069acb;\n\n  font-size:11px;\n\n  line-height:1;\n\n  font-weight:700;\n\n  letter-spacing:2.1px;\n}\n\n.smt-product-summary h2{\n  margin-bottom:7px !important;\n\n  color:#15384d;\n\n  font-size:37px;\n\n  line-height:1.15;\n\n  font-weight:700;\n\n  letter-spacing:-.7px;\n}\n\n.smt-product-cn{\n  margin-bottom:23px;\n\n  color:#6e818c;\n\n  font-size:18px;\n\n  line-height:1.4;\n\n  font-weight:500;\n}\n\n.smt-product-lead{\n  margin-bottom:30px !important;\n\n  color:#71818a;\n\n  font-size:15px;\n\n  line-height:1.85;\n}\n\n\n\n\/* KEY SPECS *\/\n\n.smt-key-specs{\n  display:grid;\n\n  grid-template-columns:\n    repeat(2,minmax(0,1fr));\n\n  border-top:\n    1px solid #e1e8eb;\n\n  border-left:\n    1px solid #e1e8eb;\n}\n\n.smt-key-spec{\n  min-height:92px;\n\n  padding:\n    18px 18px;\n\n  border-right:\n    1px solid #e1e8eb;\n\n  border-bottom:\n    1px solid #e1e8eb;\n\n  background:#fafcfd;\n}\n\n.smt-key-spec small{\n  display:block;\n\n  margin-bottom:7px;\n\n  color:#9ba6ac;\n\n  font-size:10px;\n\n  line-height:1.2;\n\n  font-weight:600;\n\n  text-transform:uppercase;\n\n  letter-spacing:.6px;\n}\n\n.smt-key-spec strong{\n  display:block;\n\n  color:#304f61;\n\n  font-size:15px;\n\n  line-height:1.45;\n\n  font-weight:700;\n}\n\n\n\n\/* INQUIRY BUTTON *\/\n\n.smt-summary-action{\n  margin-top:28px;\n\n  display:flex;\n\n  align-items:center;\n\n  gap:13px;\n}\n\n.smt-inquiry-btn{\n  min-height:52px;\n\n  padding:\n    0 24px;\n\n  display:inline-flex;\n\n  align-items:center;\n  justify-content:center;\n\n  background:#078fc6;\n\n  color:#ffffff !important;\n\n  font-size:14px;\n\n  font-weight:700;\n\n  transition:.25s ease;\n}\n\n.smt-inquiry-btn:hover{\n  background:#066f9d;\n}\n\n.smt-back-btn{\n  min-height:52px;\n\n  padding:\n    0 20px;\n\n  display:inline-flex;\n\n  align-items:center;\n\n  border:\n    1px solid #d4e0e6;\n\n  color:#597281 !important;\n\n  font-size:13px;\n\n  font-weight:600;\n\n  transition:.25s ease;\n}\n\n.smt-back-btn:hover{\n  border-color:#0797ca;\n\n  color:#0797ca !important;\n}\n\n\n\n\/* =========================================================\n   09 SECTION HEADER\n========================================================= *\/\n\n.smt-detail-block{\n  margin-top:50px;\n}\n\n.smt-section-label{\n  min-height:56px;\n\n  padding:\n    0 23px;\n\n  display:flex;\n\n  align-items:center;\n\n  gap:12px;\n\n  background:#073b59;\n\n  color:#ffffff;\n}\n\n.smt-section-label i{\n  display:block;\n\n  width:4px;\n  height:25px;\n\n  background:#12b7e5;\n}\n\n.smt-section-label span{\n  font-size:17px;\n\n  font-weight:700;\n}\n\n.smt-section-body{\n  padding:\n    34px 32px;\n\n  border:\n    1px solid #dfe6e9;\n\n  border-top:0;\n\n  background:#ffffff;\n}\n\n\n\n\/* =========================================================\n   10 PRODUCT DESCRIPTION\n========================================================= *\/\n\n.smt-description-grid{\n  display:grid;\n\n  grid-template-columns:\n    1.2fr .8fr;\n\n  gap:50px;\n\n  align-items:start;\n}\n\n.smt-description-copy h3{\n  margin-bottom:14px !important;\n\n  color:#173c50;\n\n  font-size:26px;\n\n  line-height:1.25;\n}\n\n.smt-description-copy p{\n  margin-bottom:14px !important;\n\n  color:#71818a;\n\n  font-size:15px;\n\n  line-height:1.85;\n}\n\n.smt-description-copy p:last-child{\n  margin-bottom:0 !important;\n}\n\n\n\n\/* QUICK DATA *\/\n\n.smt-quick-data{\n  border-top:\n    2px solid #0798ca;\n}\n\n.smt-quick-data-row{\n  min-height:57px;\n\n  padding:\n    0 14px;\n\n  display:grid;\n\n  grid-template-columns:\n    45% 55%;\n\n  align-items:center;\n\n  border-bottom:\n    1px solid #e4eaed;\n}\n\n.smt-quick-data-row span{\n  color:#89969d;\n\n  font-size:12px;\n\n  font-weight:500;\n}\n\n.smt-quick-data-row strong{\n  color:#375768;\n\n  font-size:13px;\n\n  line-height:1.4;\n\n  font-weight:700;\n}\n\n\n\n\/* =========================================================\n   11 FULL SPEC TABLE\n========================================================= *\/\n\n.smt-spec-table{\n  width:100%;\n\n  border-collapse:collapse;\n\n  table-layout:fixed;\n}\n\n.smt-spec-table th,\n.smt-spec-table td{\n  padding:\n    16px 18px;\n\n  border:\n    1px solid #dfe6e9;\n\n  text-align:left;\n\n  vertical-align:middle;\n}\n\n.smt-spec-table th{\n  width:34%;\n\n  background:#f2f6f8;\n\n  color:#36596c;\n\n  font-size:13px;\n\n  font-weight:700;\n}\n\n.smt-spec-table td{\n  color:#60737d;\n\n  font-size:13px;\n\n  line-height:1.55;\n}\n\n\n\n\/* =========================================================\n   12 CONFIGURATION\n========================================================= *\/\n\n.smt-config-intro{\n  max-width:800px;\n\n  margin-bottom:28px !important;\n\n  color:#71818a;\n\n  font-size:15px;\n\n  line-height:1.85;\n}\n\n.smt-config-grid{\n  display:grid;\n\n  grid-template-columns:\n    repeat(4,minmax(0,1fr));\n\n  gap:16px;\n}\n\n.smt-config-card{\n  min-height:190px;\n\n  padding:\n    25px 20px;\n\n  border:\n    1px solid #dae5e9;\n\n  background:#f8fafb;\n\n  transition:.25s ease;\n}\n\n.smt-config-card:hover{\n  transform:\n    translateY(-4px);\n\n  border-color:#a8d9e9;\n\n  background:#ffffff;\n\n  box-shadow:\n    0 12px 27px\n    rgba(16,55,75,.07);\n}\n\n.smt-config-number{\n  margin-bottom:28px;\n\n  color:#079bcf;\n\n  font-size:12px;\n\n  font-weight:700;\n}\n\n.smt-config-card h3{\n  margin-bottom:9px !important;\n\n  color:#264a5d;\n\n  font-size:17px;\n\n  line-height:1.3;\n}\n\n.smt-config-card p{\n  margin-bottom:0 !important;\n\n  color:#7c8b93;\n\n  font-size:13px;\n\n  line-height:1.65;\n}\n\n\n\n\/* =========================================================\n   13 SUPPLY FLOW\n========================================================= *\/\n\n.smt-flow{\n  margin-top:25px;\n\n  display:grid;\n\n  grid-template-columns:\n    1fr auto 1fr auto 1fr auto 1fr;\n\n  align-items:center;\n\n  gap:15px;\n}\n\n.smt-flow-item{\n  min-height:100px;\n\n  padding:\n    20px 15px;\n\n  display:flex;\n\n  align-items:center;\n  justify-content:center;\n\n  flex-direction:column;\n\n  border:\n    1px solid #dce6ea;\n\n  background:#ffffff;\n\n  text-align:center;\n}\n\n.smt-flow-item small{\n  margin-bottom:7px;\n\n  color:#0799cc;\n\n  font-size:9px;\n\n  font-weight:700;\n\n  letter-spacing:1.2px;\n}\n\n.smt-flow-item strong{\n  color:#385768;\n\n  font-size:13px;\n\n  line-height:1.4;\n}\n\n.smt-flow-arrow{\n  color:#0799cc;\n\n  font-size:20px;\n}\n\n\n\n\/* =========================================================\n   14 RELATED PRODUCTS\n========================================================= *\/\n\n.smt-related-grid{\n  display:grid;\n\n  grid-template-columns:\n    repeat(3,minmax(0,1fr));\n\n  gap:21px;\n}\n\n.smt-related-card{\n  border:\n    1px solid #dce5e9;\n\n  background:#ffffff;\n\n  overflow:hidden;\n\n  transition:.25s ease;\n}\n\n.smt-related-card:hover{\n  transform:\n    translateY(-4px);\n\n  border-color:#acd8e8;\n}\n\n.smt-related-visual{\n  height:165px;\n\n  display:flex;\n\n  align-items:center;\n  justify-content:center;\n\n  flex-direction:column;\n\n  background:\n    radial-gradient(\n      circle at 70% 20%,\n      rgba(121,228,255,.28),\n      transparent 28%\n    ),\n    linear-gradient(\n      140deg,\n      #28aae6,\n      #0788c4,\n      #086198\n    );\n}\n\n.smt-related-formula{\n  min-width:86px;\n\n  padding:\n    8px 14px;\n\n  border:\n    1px solid rgba(255,255,255,.23);\n\n  color:#ffffff;\n\n  font-size:29px;\n\n  font-weight:700;\n\n  text-align:center;\n}\n\n.smt-related-formula sub{\n  font-size:14px;\n}\n\n.smt-related-body{\n  padding:\n    18px 18px 19px;\n}\n\n.smt-related-body h3{\n  margin-bottom:5px !important;\n\n  color:#24495d;\n\n  font-size:17px;\n\n  line-height:1.35;\n}\n\n.smt-related-cn{\n  margin-bottom:14px;\n\n  color:#84939b;\n\n  font-size:12px;\n}\n\n.smt-related-range{\n  padding-top:12px;\n\n  border-top:\n    1px solid #e5eaed;\n\n  color:#58717f;\n\n  font-size:12px;\n\n  line-height:1.5;\n}\n\n.smt-related-link{\n  margin-top:15px;\n\n  display:flex;\n\n  justify-content:space-between;\n\n  color:#078fc2 !important;\n\n  font-size:12px;\n\n  font-weight:700;\n}\n\n\n\n\/* =========================================================\n   15 INQUIRY\n========================================================= *\/\n\n.smt-inquiry-box{\n  display:grid;\n\n  grid-template-columns:\n    .8fr 1.2fr;\n\n  overflow:hidden;\n\n  border:\n    1px solid #dbe4e8;\n}\n\n.smt-inquiry-left{\n  padding:\n    42px 36px;\n\n  background:\n    linear-gradient(\n      145deg,\n      #073a58,\n      #075f86\n    );\n\n  color:#ffffff;\n}\n\n.smt-inquiry-left small{\n  display:block;\n\n  margin-bottom:12px;\n\n  color:#55ccef;\n\n  font-size:10px;\n\n  font-weight:700;\n\n  letter-spacing:2px;\n}\n\n.smt-inquiry-left h3{\n  margin-bottom:16px !important;\n\n  color:#ffffff;\n\n  font-size:30px;\n\n  line-height:1.2;\n}\n\n.smt-inquiry-left p{\n  margin-bottom:0 !important;\n\n  color:\n    rgba(255,255,255,.72);\n\n  font-size:14px;\n\n  line-height:1.8;\n}\n\n.smt-inquiry-form{\n  padding:\n    36px;\n\n  background:#f7f9fa;\n}\n\n.smt-form-row{\n  display:grid;\n\n  grid-template-columns:\n    repeat(2,minmax(0,1fr));\n\n  gap:15px;\n\n  margin-bottom:15px;\n}\n\n.smt-form-field{\n  width:100%;\n\n  min-height:50px;\n\n  padding:\n    0 14px;\n\n  border:\n    1px solid #d7e0e4 !important;\n\n  border-radius:0 !important;\n\n  outline:none !important;\n\n  background:#ffffff !important;\n\n  color:#425f6e;\n\n  font-family:inherit;\n\n  font-size:13px;\n}\n\ntextarea.smt-form-field{\n  min-height:125px;\n\n  padding:\n    14px;\n\n  resize:vertical;\n}\n\n.smt-form-field:focus{\n  border-color:#0799ca !important;\n}\n\n.smt-form-submit{\n  min-height:51px;\n\n  margin-top:15px !important;\n\n  padding:\n    0 25px !important;\n\n  border:0 !important;\n\n  border-radius:0 !important;\n\n  background:#078fc5 !important;\n\n  color:#ffffff !important;\n\n  font-family:inherit;\n\n  font-size:13px;\n\n  font-weight:700;\n\n  cursor:pointer;\n}\n\n\n\n\/* =========================================================\n   16 TABLET\n========================================================= *\/\n\n@media(max-width:1150px){\n\n  .smt-detail-container{\n    grid-template-columns:\n      250px minmax(0,1fr);\n\n    gap:30px;\n  }\n\n  .smt-product-top{\n    grid-template-columns:\n      1fr;\n  }\n\n  .smt-product-visual{\n    min-height:410px;\n  }\n\n  .smt-config-grid{\n    grid-template-columns:\n      repeat(2,minmax(0,1fr));\n  }\n\n}\n\n\n\n\/* =========================================================\n   17 MOBILE\n========================================================= *\/\n\n@media(max-width:767px){\n\n  .smt-detail-hero{\n    min-height:260px;\n  }\n\n  .smt-detail-hero-inner{\n    width:min(100% - 30px,1400px);\n\n    padding:\n      48px 0;\n  }\n\n  .smt-detail-hero h1{\n    font-size:39px;\n  }\n\n  .smt-detail-main{\n    padding:\n      35px 0 65px;\n  }\n\n  .smt-detail-container{\n    width:min(100% - 30px,1400px);\n\n    grid-template-columns:1fr;\n\n    gap:30px;\n  }\n\n  .smt-detail-side-head{\n    min-height:120px;\n  }\n\n  .smt-detail-side-nav{\n    display:grid;\n\n    grid-template-columns:\n      repeat(2,minmax(0,1fr));\n\n    gap:7px;\n  }\n\n  .smt-detail-side-nav a{\n    min-height:54px;\n\n    margin:0;\n\n    padding:\n      0 11px;\n\n    font-size:12px;\n  }\n\n  .smt-product-top{\n    margin-top:30px;\n  }\n\n  .smt-product-visual{\n    min-height:350px;\n  }\n\n  .smt-product-summary{\n    padding:\n      30px 22px;\n  }\n\n  .smt-product-summary h2{\n    font-size:29px;\n  }\n\n  .smt-key-specs{\n    grid-template-columns:1fr;\n  }\n\n  .smt-description-grid{\n    grid-template-columns:1fr;\n\n    gap:30px;\n  }\n\n  .smt-section-body{\n    padding:\n      25px 20px;\n  }\n\n  .smt-spec-table th,\n  .smt-spec-table td{\n    padding:\n      13px 10px;\n\n    font-size:11px;\n  }\n\n  .smt-config-grid{\n    grid-template-columns:1fr;\n  }\n\n  .smt-flow{\n    grid-template-columns:1fr;\n\n    gap:7px;\n  }\n\n  .smt-flow-arrow{\n    transform:\n      rotate(90deg);\n  }\n\n  .smt-related-grid{\n    grid-template-columns:1fr;\n  }\n\n  .smt-inquiry-box{\n    grid-template-columns:1fr;\n  }\n\n  .smt-form-row{\n    grid-template-columns:1fr;\n  }\n\n}\n\n\n\n\/* =========================================================\n   HIGH PURITY GAS\n   SMALL TEMPLATE EXTENSIONS\n========================================================= *\/\n\n.smt-formula-box.smt-o2-formula{\n  min-width:180px;\n  padding:18px 22px;\n  font-size:46px;\n  line-height:1;\n  letter-spacing:.5px;\n}\n\n.smt-o2-purity-grid{\n  display:grid;\n  grid-template-columns:repeat(2,minmax(0,1fr));\n  gap:18px;\n  margin-top:22px;\n}\n\n.smt-o2-purity-card{\n  padding:24px 22px;\n  border:1px solid #dfe6e9;\n  background:#ffffff;\n}\n\n.smt-o2-purity-card small{\n  display:block;\n  margin-bottom:10px;\n  color:#0799ca;\n  font-size:11px;\n  font-weight:700;\n  letter-spacing:1.2px;\n}\n\n.smt-o2-purity-card strong{\n  display:block;\n  color:#173c50;\n  font-size:28px;\n  line-height:1.1;\n}\n\n.smt-o2-note{\n  margin-top:18px !important;\n  padding:15px 17px;\n  border-left:3px solid #0799ca;\n  background:#f4f9fb;\n  color:#627780 !important;\n  font-size:13px !important;\n  line-height:1.7 !important;\n}\n\n@media(max-width:767px){\n  .smt-o2-purity-grid{\n    grid-template-columns:1fr;\n  }\n}\n\n\n\/* Product Inquiry stays inside the right product-content column *\/\n.smt-detail-content #product-inquiry{\n  width:100%;\n}\n\n.smt-detail-content #product-inquiry .smt-inquiry-box{\n  width:100%;\n  grid-template-columns:40% 60%;\n}\n\n@media(max-width:767px){\n  .smt-detail-content #product-inquiry .smt-inquiry-box{\n    grid-template-columns:1fr;\n  }\n}\n<\/style>\n\n<section class=\"smt-detail\" data-company=\"Smart Special Gas Shanghai Co.,Ltd\" data-product-url=\"https:\/\/smt-special-gas.com\/helium-3\/\">\n\n  <div class=\"smt-detail-hero\">\n    <div class=\"smt-detail-hero-bg\"><\/div>\n    <div class=\"smt-detail-hero-overlay\"><\/div>\n    <div class=\"smt-detail-hero-inner\">\n      <div class=\"smt-detail-hero-kicker\">\n        ISOTOPE GAS \u00b7 PRODUCT DETAIL\n      <\/div>\n      <h1>Helium-3<\/h1>\n      <p>\n        Helium isotope gas identified in the product catalog as Helium-3,\n        with catalog-listed isotope abundance options of 99.9 atom%\n        and 99.999 atom%.\n      <\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"smt-detail-main\">\n    <div class=\"smt-detail-container\">\n\n      <aside>\n        <div class=\"smt-detail-side-head\">\n          <small>PRODUCTS<\/small>\n          <strong>Product Center<\/strong>\n          <i><\/i>\n        <\/div>\n\n        <nav class=\"smt-detail-side-nav\">\n          <a href=\"https:\/\/smt-special-gas.com\/products\/\">\n            <span>All Products<\/span><b>\u2192<\/b>\n          <\/a>\n          <a href=\"https:\/\/smt-special-gas.com\/mixed-gas\/\">\n            <span>Mixed Gas<\/span><b>\u2192<\/b>\n          <\/a>\n          <a href=\"https:\/\/smt-special-gas.com\/high-purity-gas\/\">\n            <span>High Purity Gas<\/span><b>\u2192<\/b>\n          <\/a>\n          <a href=\"https:\/\/smt-special-gas.com\/electronic-gas\/\">\n            <span>Electronic Gas<\/span><b>\u2192<\/b>\n          <\/a>\n          <a class=\"active\" href=\"https:\/\/smt-special-gas.com\/isotope-gas\/\">\n            <span>Isotope Gas<\/span><b>\u2192<\/b>\n          <\/a>\n          <a href=\"https:\/\/smt-special-gas.com\/electronic-chemicals\/\">\n            <span>Electronic Chemicals<\/span><b>\u2192<\/b>\n          <\/a>\n          <a href=\"https:\/\/smt-special-gas.com\/gas-pipeline-supporting\/\">\n            <span>Gas Pipeline Supporting<\/span><b>\u2192<\/b>\n          <\/a>\n          <a href=\"https:\/\/smt-special-gas.com\/gas-regulator\/\">\n            <span>Gas Regulators<\/span><b>\u2192<\/b>\n          <\/a>\n          <a href=\"https:\/\/smt-special-gas.com\/gas-cylinder\/\">\n            <span>Gas Cylinders<\/span><b>\u2192<\/b>\n          <\/a>\n        <\/nav>\n      <\/aside>\n\n      <main class=\"smt-detail-content\">\n\n        <div class=\"smt-detail-breadcrumb\">\n          <a href=\"https:\/\/smt-special-gas.com\/\">Home<\/a>\n          <span>\u203a<\/span>\n          <a href=\"https:\/\/smt-special-gas.com\/products\/\">Products<\/a>\n          <span>\u203a<\/span>\n          <a href=\"https:\/\/smt-special-gas.com\/isotope-gas\/\">Isotope Gas<\/a>\n          <span>\u203a<\/span>\n          <strong>Helium-3<\/strong>\n        <\/div>\n\n        <section class=\"smt-product-top\">\n\n          <div class=\"smt-product-visual\">\n            <div class=\"smt-molecule\">\n              <span class=\"smt-molecule-ring r1\"><\/span>\n              <span class=\"smt-molecule-ring r2\"><\/span>\n              <span class=\"smt-molecule-ring r3\"><\/span>\n              <i class=\"smt-molecule-dot d1\"><\/i>\n              <i class=\"smt-molecule-dot d2\"><\/i>\n              <i class=\"smt-molecule-dot d3\"><\/i>\n\n              <div class=\"smt-formula-box smt-o2-formula\">\n                <sup>3<\/sup>He\n              <\/div>\n            <\/div>\n\n            <div class=\"smt-visual-caption\">\n              Helium-3 Isotope Gas\n            <\/div>\n          <\/div>\n\n          <div class=\"smt-product-summary\">\n            <div class=\"smt-product-category\">\n              ISOTOPE GAS\n            <\/div>\n\n            <h2>Helium-3<\/h2>\n            <div class=\"smt-product-cn\">\u6c26-3<\/div>\n\n            <p class=\"smt-product-lead\">\n              The product catalog lists Helium-3 in the helium isotope series.\n              Two isotope abundance options are shown: 99.9 atom% and\n              99.999 atom%. Cylinder specification, standard filling pressure\n              and valve information are not specified in the catalog table\n              for this product.\n            <\/p>\n\n            <div class=\"smt-key-specs\">\n              <div class=\"smt-key-spec\">\n                <small>Base Gas<\/small>\n                <strong>Helium<\/strong>\n              <\/div>\n\n              <div class=\"smt-key-spec\">\n                <small>Isotope<\/small>\n                <strong><sup>3<\/sup>He<\/strong>\n              <\/div>\n\n              <div class=\"smt-key-spec\">\n                <small>Abundance<\/small>\n                <strong>99.9 \/ 99.999 atom%<\/strong>\n              <\/div>\n\n              <div class=\"smt-key-spec\">\n                <small>Category<\/small>\n                <strong>Isotope Gas<\/strong>\n              <\/div>\n            <\/div>\n\n            <div class=\"smt-summary-action\">\n              <a class=\"smt-inquiry-btn\" href=\"#product-inquiry\">\n                Send Inquiry\n              <\/a>\n\n              <a class=\"smt-back-btn\" href=\"https:\/\/smt-special-gas.com\/isotope-gas\/\">\n                \u2190 Back to Isotope Gas\n              <\/a>\n            <\/div>\n          <\/div>\n\n        <\/section>\n\n        <section class=\"smt-detail-block\">\n          <div class=\"smt-section-label\">\n            <i><\/i>\n            <span>Product Details<\/span>\n          <\/div>\n\n          <div class=\"smt-section-body\">\n            <div class=\"smt-description-grid\">\n\n              <div class=\"smt-description-copy\">\n                <h3>Helium-3 Isotope Gas<\/h3>\n\n                <p>\n                  Helium-3 is listed in the product catalog under the\n                  isotope-gas product category.\n                <\/p>\n\n                <p>\n                  The catalog groups this product under Helium \/ \u6c26\u6c14,\n                  with the Chinese product name \u6c26-3 and the English\n                  product name Helium-3.\n                <\/p>\n\n                <p>\n                  The catalog provides two listed isotope abundance options:\n                  99.9 atom% and 99.999 atom%. The isotope-gas table does not\n                  specify cylinder size, filling pressure or valve connection\n                  for this item.\n                <\/p>\n              <\/div>\n\n              <div class=\"smt-quick-data\">\n                <div class=\"smt-quick-data-row\">\n                  <span>Base Gas<\/span>\n                  <strong>Helium<\/strong>\n                <\/div>\n\n                <div class=\"smt-quick-data-row\">\n                  <span>Chinese Name<\/span>\n                  <strong>\u6c26-3<\/strong>\n                <\/div>\n\n                <div class=\"smt-quick-data-row\">\n                  <span>English Name<\/span>\n                  <strong>Helium-3<\/strong>\n                <\/div>\n\n                <div class=\"smt-quick-data-row\">\n                  <span>Isotope<\/span>\n                  <strong><sup>3<\/sup>He<\/strong>\n                <\/div>\n\n                <div class=\"smt-quick-data-row\">\n                  <span>Isotope Abundance<\/span>\n                  <strong>99.9 \/ 99.999 atom%<\/strong>\n                <\/div>\n\n                <div class=\"smt-quick-data-row\">\n                  <span>Product Category<\/span>\n                  <strong>Isotope Gas<\/strong>\n                <\/div>\n              <\/div>\n\n            <\/div>\n          <\/div>\n        <\/section>\n\n        <section class=\"smt-detail-block\">\n          <div class=\"smt-section-label\">\n            <i><\/i>\n            <span>Technical Specifications<\/span>\n          <\/div>\n\n          <div class=\"smt-section-body\">\n\n            <table class=\"smt-spec-table\">\n              <tbody>\n                <tr>\n                  <th>Base Gas<\/th>\n                  <td>Helium<\/td>\n                <\/tr>\n\n                <tr>\n                  <th>Chinese Name<\/th>\n                  <td>\u6c26-3<\/td>\n                <\/tr>\n\n                <tr>\n                  <th>English Name<\/th>\n                  <td>Helium-3<\/td>\n                <\/tr>\n\n                <tr>\n                  <th>Isotope<\/th>\n                  <td><sup>3<\/sup>He<\/td>\n                <\/tr>\n\n                <tr>\n                  <th>Isotope Abundance<\/th>\n                  <td>99.9 atom% \/ 99.999 atom%<\/td>\n                <\/tr>\n\n                <tr>\n                  <th>Cylinder \/ Package<\/th>\n                  <td>Not specified in the product catalog<\/td>\n                <\/tr>\n\n                <tr>\n                  <th>Valve<\/th>\n                  <td>Not specified in the product catalog<\/td>\n                <\/tr>\n\n                <tr>\n                  <th>Product Category<\/th>\n                  <td>Isotope Gas<\/td>\n                <\/tr>\n              <\/tbody>\n            <\/table>\n\n            <div class=\"smt-o2-purity-grid\">\n              <div class=\"smt-o2-purity-card\">\n                <small>ISOTOPE ABUNDANCE<\/small>\n                <strong>99.9 atom%<\/strong>\n              <\/div>\n\n              <div class=\"smt-o2-purity-card\">\n                <small>ISOTOPE ABUNDANCE<\/small>\n                <strong>99.999 atom%<\/strong>\n              <\/div>\n            <\/div>\n\n            <p class=\"smt-o2-note\">\n              The catalog lists Helium-3 twice, with isotope abundances\n              of 99.9 atom% and 99.999 atom%. No cylinder specification,\n              standard filling pressure or valve connection is provided\n              in the isotope-gas table for this product.\n            <\/p>\n\n          <\/div>\n        <\/section>\n\n        <section class=\"smt-detail-block\">\n          <div class=\"smt-section-label\">\n            <i><\/i>\n            <span>Supply Configuration<\/span>\n          <\/div>\n\n          <div class=\"smt-section-body\">\n\n            <p class=\"smt-config-intro\">\n              Submit your required isotope abundance, quantity, package and\n              supply configuration for Helium-3. The catalog provides two\n              abundance options but does not list a fixed cylinder or valve\n              configuration for this item.\n            <\/p>\n\n            <div class=\"smt-config-grid\">\n\n              <div class=\"smt-config-card\">\n                <div class=\"smt-config-number\">01<\/div>\n                <h3>Product<\/h3>\n                <p>Helium-3 isotope gas.<\/p>\n              <\/div>\n\n              <div class=\"smt-config-card\">\n                <div class=\"smt-config-number\">02<\/div>\n                <h3>Isotope<\/h3>\n                <p>Helium-3 (<sup>3<\/sup>He).<\/p>\n              <\/div>\n\n              <div class=\"smt-config-card\">\n                <div class=\"smt-config-number\">03<\/div>\n                <h3>Abundance<\/h3>\n                <p>Catalog-listed options: 99.9 atom% \/ 99.999 atom%.<\/p>\n              <\/div>\n\n              <div class=\"smt-config-card\">\n                <div class=\"smt-config-number\">04<\/div>\n                <h3>Package \/ Valve<\/h3>\n                <p>To be confirmed according to inquiry requirements.<\/p>\n              <\/div>\n\n            <\/div>\n\n            <div class=\"smt-flow\">\n              <div class=\"smt-flow-item\">\n                <small>STEP 01<\/small>\n                <strong>Select Abundance<\/strong>\n              <\/div>\n\n              <div class=\"smt-flow-arrow\">\u2192<\/div>\n\n              <div class=\"smt-flow-item\">\n                <small>STEP 02<\/small>\n                <strong>Confirm Quantity<\/strong>\n              <\/div>\n\n              <div class=\"smt-flow-arrow\">\u2192<\/div>\n\n              <div class=\"smt-flow-item\">\n                <small>STEP 03<\/small>\n                <strong>Confirm Package<\/strong>\n              <\/div>\n\n              <div class=\"smt-flow-arrow\">\u2192<\/div>\n\n              <div class=\"smt-flow-item\">\n                <small>STEP 04<\/small>\n                <strong>Submit Inquiry<\/strong>\n              <\/div>\n            <\/div>\n\n          <\/div>\n        <\/section>\n\n        <section class=\"smt-detail-block\">\n          <div class=\"smt-section-label\">\n            <i><\/i>\n            <span>Related Isotope Gases<\/span>\n          <\/div>\n\n          <div class=\"smt-section-body\">\n            <div class=\"smt-related-grid\">\n\n              <article class=\"smt-related-card\">\n                <div class=\"smt-related-visual\">\n                  <div class=\"smt-related-formula\"><sup>15<\/sup>N<sub>2<\/sub><\/div>\n                <\/div>\n                <div class=\"smt-related-body\">\n                  <h3>Nitrogen-15N\u2082<\/h3>\n                  <div class=\"smt-related-cn\">\u6c2e\u6c14-15N\u2082<\/div>\n                  <div class=\"smt-related-range\">\n                    99 atom% <sup>15<\/sup>N\n                  <\/div>\n                  <a class=\"smt-related-link\" href=\"https:\/\/smt-special-gas.com\/nitrogen-15n2\/\">\n                    <span>View Details<\/span><b>\u2192<\/b>\n                  <\/a>\n                <\/div>\n              <\/article>\n\n              <article class=\"smt-related-card\">\n                <div class=\"smt-related-visual\">\n                  <div class=\"smt-related-formula\"><sup>78<\/sup>Kr<\/div>\n                <\/div>\n                <div class=\"smt-related-body\">\n                  <h3>Krypton-78<\/h3>\n                  <div class=\"smt-related-cn\">\u6c2a-78<\/div>\n                  <div class=\"smt-related-range\">\n                    99 atom%\n                  <\/div>\n                  <a class=\"smt-related-link\" href=\"https:\/\/smt-special-gas.com\/krypton-78\/\">\n                    <span>View Details<\/span><b>\u2192<\/b>\n                  <\/a>\n                <\/div>\n              <\/article>\n\n              <article class=\"smt-related-card\">\n                <div class=\"smt-related-visual\">\n                  <div class=\"smt-related-formula\"><sup>20<\/sup>Ne<\/div>\n                <\/div>\n                <div class=\"smt-related-body\">\n                  <h3>Neon-20<\/h3>\n                  <div class=\"smt-related-cn\">\u6c16-20<\/div>\n                  <div class=\"smt-related-range\">\n                    99 atom%\n                  <\/div>\n                  <a class=\"smt-related-link\" href=\"https:\/\/smt-special-gas.com\/neon-20\/\">\n                    <span>View Details<\/span><b>\u2192<\/b>\n                  <\/a>\n                <\/div>\n              <\/article>\n\n            <\/div>\n          <\/div>\n        <\/section>\n\n        <section class=\"smt-detail-block\" id=\"product-inquiry\">\n\n          <div class=\"smt-section-label\">\n            <i><\/i>\n            <span>Product Inquiry<\/span>\n          <\/div>\n\n          <div class=\"smt-inquiry-box\">\n\n            <div class=\"smt-inquiry-left\">\n              <small>REQUEST A CONFIGURATION<\/small>\n              <h3>Need Helium-3 Isotope Gas?<\/h3>\n              <p>\n                Tell us your required isotope abundance, package,\n                quantity and other supply requirements.\n              <\/p>\n            <\/div>\n\n            <form action=\"mailto:YOUR-EMAIL@DOMAIN.COM\" class=\"smt-inquiry-form\" enctype=\"text\/plain\" method=\"post\">\n\n              <div class=\"smt-form-row\">\n                <input class=\"smt-form-field\" name=\"Name\" placeholder=\"Your Name\" required type=\"text\">\n\n                <input class=\"smt-form-field\" name=\"Email\" placeholder=\"Email Address\" required type=\"email\">\n              <\/div>\n\n              <div class=\"smt-form-row\">\n                <input class=\"smt-form-field\" name=\"Company\" placeholder=\"Company\" type=\"text\">\n\n                <input class=\"smt-form-field\" name=\"Isotope Abundance\" placeholder=\"Required Abundance: 99.9 \/ 99.999 atom%\" type=\"text\">\n              <\/div>\n\n              <div class=\"smt-form-row\">\n                <input class=\"smt-form-field\" name=\"Package\" placeholder=\"Required Package \/ Cylinder\" type=\"text\">\n\n                <input class=\"smt-form-field\" name=\"Quantity\" placeholder=\"Required Quantity\" type=\"text\">\n              <\/div>\n\n              <textarea class=\"smt-form-field\" name=\"Message\" placeholder=\"Tell us more about your requirements\"><\/textarea>\n\n              <button class=\"smt-form-submit\" type=\"submit\">\n                Send Inquiry \u2192\n              <\/button>\n\n            <\/form>\n\n          <\/div>\n        <\/section>\n\n      <\/main>\n    <\/div>\n  <\/div>\n\n<\/section>\n\n<!-- Company name included in code\/SEO only; not rendered as visible page content:\nSmart Special Gas Shanghai Co.,Ltd\n-->\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"Product\",\n  \"name\": \"Helium-3\",\n  \"alternateName\": \"\u6c26-3\",\n  \"description\": \"Helium-3 isotope gas with catalog-listed isotope abundance options of 99.9 atom% and 99.999 atom%.\",\n  \"category\": \"Isotope Gas\",\n  \"url\": \"https:\/\/smt-special-gas.com\/helium-3\/\",\n  \"manufacturer\": {\n    \"@type\": \"Organization\",\n    \"name\": \"Smart Special Gas Shanghai Co.,Ltd\"\n  },\n  \"additionalProperty\": [\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Base Gas\",\n      \"value\": \"Helium\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Isotope\",\n      \"value\": \"3He\"\n    },\n    {\n      \"@type\": \"PropertyValue\",\n      \"name\": \"Isotope Abundance\",\n      \"value\": \"99.9 atom% \/ 99.999 atom%\"\n    }\n  ]\n}\n<\/script>\n\n<\/div>\n\n\n\n<p 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