Other clays (not including expanded clays of heading 68.06), andalusite, kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earths
250840Subheading
250840 — Other clays:
Đất sét khác:
Codes under heading 250840
Distinguish from heading:2507Kaoli…2530Miner…3802Activ…3824Prepa…
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