2508.10.00.00
Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths:
General duty rate (US): Free
| Code | Heading | Rate |
|---|---|---|
| 2703.00.00.00 | Free | |
| 2507.00.00.00 | Free |
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Suggested codes are recommendations only, not a binding ruling — only CBP issues binding rulings (19 CFR Part 177). The importer of record is responsible for the final classification (19 USC 1484). Data: official USITC Harmonized Tariff Schedule.