Beijing Huasheng Precious Metal Materials Co., LTD., yomwe idakhazikitsidwa mu 2003, yakhala ikupanga zitsulo zopanda chitsulo (tungsten, molybdenum, tantalum, niobium, faifi tambala, cobalt, ferroalloy ndi charge) kwa nthawi yayitali.Kupanga ndi kukonza kwakukulu: zinthu za tungsten ndi molybdenum, tantalum ndi niobium prod ...
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