{
  "summary": "In the United States tariff, line 3911.90.70.00 covers chlorinated synthetic rubber. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 3911.90 in heading 39.11 (chapter 39).",
  "updatedAt": "2026-10-09",
  "facts": [
    {
      "label": "Tariff line",
      "value": "3911.90.70.00",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Covers",
      "value": "Chlorinated synthetic rubber",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Duty (MFN)",
      "value": "Free",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Additional duties",
      "value": "None recorded",
      "source": null
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    {
      "label": "Restrictions",
      "value": "None recorded",
      "source": null
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    {
      "label": "Tariff",
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  "faq": [
    {
      "question": "What does tariff line 3911.90.70.00 cover in the United States tariff?",
      "answer": "In the United States tariff, line 3911.90.70.00 covers chlorinated synthetic rubber."
    },
    {
      "question": "What is the general (MFN) duty on 3911.90.70.00 in the United States?",
      "answer": "Goods under this line enter free of general (MFN) duty."
    }
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  "sections": [
    {
      "id": "covers",
      "title": "What this line covers",
      "text": [
        "In the United States tariff, line 3911.90.70.00 covers chlorinated synthetic rubber.",
        "Its legal text is “Chlorinated synthetic rubber”, read under “Other”, “Other” and “Other”."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "It falls under HS subheading 3911.90 in heading 39.11 (chapter 39). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff."
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    {
      "id": "duty",
      "title": "Duty",
      "text": [
        "Goods under this line enter free of general (MFN) duty."
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    {
      "id": "other-countries",
      "title": "In other countries",
      "text": [
        "No other national tariff on border.bot has live lines under 3911.90 yet."
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    },
    {
      "id": "sources",
      "title": "Sources and updates",
      "text": [
        "The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.",
        "This page was last updated on 9 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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    "dateModified": "2026-10-09T21:15:58.040Z",
    "chapter": {
      "code": "39",
      "description": "Plastics and articles thereof"
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    "heading": {
      "code": "3911",
      "description": "Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms"
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      "code": "391190",
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      "code": "3911907000",
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        "code": "3911901500",
        "description": "Poly(nitrilomethanetetraarylnitrilo- [2,4,6-tris-(1-methyethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)- phenyl]-ω-[[[2,6-bis(1-methylethyl)- phenyl]amino]methylene]amino carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methyl- ethyl) homopolymer with polyethylene"
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        "code": "3911902500",
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        "code": "3911903500",
        "description": "1,1'-Bis(methylenedi-4,1-phenylene)- 1H-pyrrole-2,5-dione, copolymer with 4,4'-methylenebis(benzeneamine); and Hydrocarbon novolac cyanate ester"
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        "code": "3911904500",
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      {
        "code": "3911909110",
        "description": "Thermoplastic"
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      {
        "code": "3911909150",
        "description": "Thermosetting"
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  "terms": "https://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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