Beijing Huasheng Hlau Khoom Co., Ltd. yog tsim nyob rau hauv 2003. Lub tuam txhab tau ntev tau koom tes nyob rau hauv lub lag luam ntawm non-ferrous hlau (tungsten, molybdenum, tantalum, niobium, npib tsib xee, cobalt, ferro alloys thiab lub cub tawg lub nra).Main ntau lawm thiab ua: tungsten thiab molybdenum p ...
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