Beijing Huasheng Precious hlau Materials Co., LTD., nrhiav tau nyob rau hauv 2003, tau koom nyob rau hauv non-ferrous hlau (tungsten, molybdenum, tantalum, niobium, npib tsib xee, cobalt, ferroalloy thiab nqi) rau ib ntev lub sij hawm.Main ntau lawm thiab ua: tungsten thiab molybdenum khoom, tantalum thiab niobium pro ...
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