{
  "summary": "In the United States tariff, line 2508.70.00.00 covers chamotte or dinas earth. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2508.70 in heading 25.08 (chapter 25).",
  "updatedAt": "2026-10-09",
  "facts": [
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      "label": "Tariff line",
      "value": "2508.70.00.00",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
    },
    {
      "label": "Covers",
      "value": "Chamotte or dinas earth",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
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    {
      "label": "Duty (MFN)",
      "value": "Free",
      "source": "https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false"
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    {
      "label": "Additional duties",
      "value": "None recorded",
      "source": null
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    {
      "label": "Restrictions",
      "value": "None recorded",
      "source": null
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      "url": "https://border.bot/hs-codes/250870"
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      "question": "What does tariff line 2508.70.00.00 cover in the United States tariff?",
      "answer": "In the United States tariff, line 2508.70.00.00 covers chamotte or dinas earth."
    },
    {
      "question": "What is the general (MFN) duty on 2508.70.00.00 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 2508.70.00.00 covers chamotte or dinas earth.",
        "Its legal text is “Chamotte or dinas earth”."
      ]
    },
    {
      "id": "structure",
      "title": "How it is structured",
      "text": [
        "It falls under HS subheading 2508.70 in heading 25.08 (chapter 25). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff."
      ]
    },
    {
      "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 2508.70 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": "25",
      "description": "Salt; sulphur; earths and stone; plastering materials, lime and cement"
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    "heading": {
      "code": "2508",
      "description": "Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths"
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    "subheading": {
      "code": "250870",
      "description": "Chamotte or dinas earths"
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    "line": {
      "code": "2508700000",
      "description": "Chamotte or dinas earth",
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      "general": {
        "code": "2508700000",
        "dutyText": "Free",
        "startDate": null,
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        "unit": null
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      "measures": [],
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    "siblingsTotal": 0,
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      "description": "Mullite",
      "indexable": true
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  "code": "2508700000",
  "attribution": "border.bot tariff reference (border.bot), compiled from the official publishers named on each page.",
  "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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