China · Heading· 1 subheadings· 0 codes

2509Other clays (not including expanded clays of heading 6806), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths

Subheadings (6-digit WCO)

250900CHALK→
China HS 2509 · Other clays (not including expanded clays of heading 6806), · Treayo