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25.11 天然硫酸钡(重晶石);天然碳酸钡(毒重石),不论是否煅烧,但品目28.16的氧化钡除外:
25.11 Natural barium sulphate (barytes); natural barium carbonate (witherite), whether or not calcined, other than barium oxide of heading 28.16:


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