Beijing Huasheng Precious metal Materials Co., LTD., Ti a da ni ọdun 2003, ti ṣiṣẹ ni awọn irin ti kii ṣe irin (tungsten, molybdenum, tantalum, niobium, nickel, cobalt, ferroalloy ati idiyele) fun igba pipẹ. tungsten ati awọn ọja molybdenum, tantalum ati niobium pro ...
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