Beijing Huasheng Precious metal Materials Co., LTD., E thehiloe ka 2003, e 'nile ea sebetsana le litšepe tse se nang ferrous (tungsten, molybdenum, tantalum, niobium, nickel, cobalt, ferroalloy le charge) ka nako e telele. lihlahisoa tsa tungsten le molybdenum, tantalum le niobium pro...
Bala haholoanyane