2511 Natural barium sulfate (barite); Natural barium carbonate (toxic heavy stone), whether calcined or not, except for barium oxide of heading 28.16: HS code chinese tariffs

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25111000 -Natural Barium Sulfate (Barite) -Natural Barium Sulfate (Barite)

25112000 -Natural barium carbonate (toxic heavy stone) -Natural barium carbonate (toxic heavy stone)