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Section V
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Chapter 25
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Heading 2511
Heading 2511
Natural barium sulphate (barytes); natural barium carbonate, (witherite) whether or not calcined, other than barium oxide of heading no. 2816
251110
Barium sulphate (barytes); natural
251120
Barium carbonate (witherite); natural, whether or not calcined, other than barium oxide of heading no. 2816