Xi'an Huashan Tungsten Products Co. Ltd. is a Northwest Industrial Group Co. Ltd., tungsten Limited by Share Ltd,Website:http://www.xahs-tungsten.com, Xi'an Huashan Pml Precision Mechanism Ltd joint venture, combined with the limited liability company in 2007 three investment in the establishment of a wholly state-owned company. Northwest Industrial Group Limited is part of Chinese ordnance industry group, tungsten mining Limited by Share Ltd, smelting, tungsten materials production and processing, trade as one of the listed company (Stock Code: 002378).