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Harmonized System
Section V > Chapter 25 > Heading 2508
Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths.
Section V > Chapter 25 > Heading 2508 > 2508.40
Other clays
Section V > Chapter 25 > Heading 2508 > 2508.50
Andalusite, kyanite and sillimanite
Section V > Chapter 25 > Heading 2526
Natural steatite, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape; talc.
Section V > Chapter 25 > Heading 2526 > 2526.10
Not crushed, not powdered
Section V > Chapter 25 > Heading 2526 > 2526.20
Crushed or powdered
Section V > Chapter 25 > Heading 2527
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