{
  "summary": "HS code 3908.90 covers polyamides in primary forms, other than those classified in 3908.10. It sits in heading 39.08 (polyamides in primary forms) in chapter 39 (plastics and articles thereof). Other goods of heading 39.08 are classified under 3908.10 (polyamide-6, -11, -12, -6,6, -6,9, -6,10 or -6,12).",
  "updatedAt": "2026-10-13",
  "facts": [
    {
      "label": "HS code",
      "value": "3908.90",
      "source": "border.bot release GLOBAL:hs #1"
    },
    {
      "label": "Covers",
      "value": "Polyamides in primary forms",
      "source": "border.bot release GLOBAL:hs #1"
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    {
      "label": "Heading",
      "value": "39.08: Polyamides in primary forms",
      "source": "border.bot release GLOBAL:hs #1",
      "url": "https://staging.border.bot/hs-codes/3908"
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      "label": "Chapter",
      "value": "39: Plastics and articles thereof",
      "source": "border.bot release GLOBAL:hs #1",
      "url": "https://staging.border.bot/hs-codes/39"
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      "label": "Edition",
      "value": "HS2022",
      "source": "border.bot release GLOBAL:hs #1"
    },
    {
      "label": "Duty rates",
      "value": "Set by each country’s tariff",
      "source": null,
      "url": "https://staging.border.bot/countries"
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  "faq": [
    {
      "question": "What does HS code 3908.90 cover?",
      "answer": "HS code 3908.90 covers polyamides in primary forms, other than those classified in 3908.10."
    },
    {
      "question": "Which heading and chapter is HS code 3908.90 in?",
      "answer": "HS code 3908.90 is in heading 39.08 (polyamides in primary forms) in chapter 39 (plastics and articles thereof)."
    },
    {
      "question": "Where are goods of heading 39.08 classified when 3908.90 doesn’t fit?",
      "answer": "Other goods of heading 39.08 are classified under 3908.10 (polyamide-6, -11, -12, -6,6, -6,9, -6,10 or -6,12)."
    }
  ],
  "sections": [
    {
      "id": "covers",
      "title": "What this code covers",
      "text": [
        "HS code 3908.90 covers polyamides in primary forms, other than those classified in 3908.10.",
        "The legal text of the subheading is “Other”, in HS2022."
      ]
    },
    {
      "id": "not-covered",
      "title": "What it doesn’t cover",
      "text": [
        "Other goods of heading 39.08 are classified under 3908.10 (polyamide-6, -11, -12, -6,6, -6,9, -6,10 or -6,12)."
      ]
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    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "3908.90 is a six-digit subheading. Its first two digits, 39, are the chapter; the first four, 3908, are heading 39.08; the last two, 90, identify the subheading within the heading.",
        "Countries add their own digits after these six for their national tariff lines."
      ]
    },
    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No national tariff lines under 3908.90 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 3908.90 at six digits and add their own digits after it."
      ]
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      "title": "Sources and updates",
      "text": [
        "The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.",
        "This page was last updated on 13 October 2026.",
        "Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling."
      ]
    }
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    "edition": "HS2022",
    "chapter": {
      "code": "39",
      "description": "Plastics and articles thereof"
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    "heading": {
      "code": "3908",
      "description": "Polyamides in primary forms"
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      "code": "390890",
      "description": "Other",
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      "english": null,
      "keywords": []
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    "siblings": [
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        "code": "390810",
        "description": "Polyamide-6, -11, -12, -6,6, -6,9, -6,10 or -6,12"
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      "description": "Urea resins; thiourea resins",
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        "dataset": "GLOBAL:hs",
        "country": "GLOBAL",
        "kind": "hs",
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        "version": "mytraddal hs2022.csv (HS 2022)",
        "liveAt": "2026-10-13T08:43:06.218Z",
        "origin": "upload",
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  "code": "390890",
  "attribution": "border.bot tariff reference (border.bot), compiled from the official publishers named on each page.",
  "terms": "https://staging.border.bot/legal/terms",
  "notice": "Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.",
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