Ua hoʻokumuʻiaʻo Beijing Huasheng Metal Materials Co., Ltd. i ka makahiki 2003. Ua lōʻihi ka hanaʻana o ka hui i ka hana o nā metala non-ferrous (tungsten, molybdenum, tantalum, niobium, nickel, cobalt, ferro alloys a me ke kaumaha o ka umu). Hana nui a me ka hana ʻana: tungsten a me molybdenum p ...
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