Beijing Huasheng Metal Materials Co., Ltd. yashinzwe mu 2003. Isosiyete imaze igihe kinini ikora imirimo y’ibyuma bidafite fer (tungsten, molybdenum, tantalum, niobium, nikel, cobalt, ferro alloys hamwe n’umutwaro w’itanura). Umusaruro wingenzi nogutunganya: tungsten na molybdenum p ...
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