… including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; …
Explanatory notes
… including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; … ‑ Fire‑clay 2508.40 ‑ Other clays 2508.50 ‑ Andalusite, kyanite and sillimanite 2508.60 ‑ Mullite 2508.70 ‑ Chamotte … oils, for degreasing textiles, etc. (3) Andalusite , kyanite (or disthene) and sillimanite , natural anhydrous …