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25.28 天然硼酸盐及其精矿(不论是否煅烧),但不包括从天然盐水析离的硼酸盐;天然粗硼酸,含硼酸干重不超过85%:
25.28 Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of H3BO3 calculated on the dry weight:


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