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This is a comprehensive company of cemented carbide with scientific research, production and business in a whole. It owns powerful technical force, consummate testing technique, advanced production technology, excellent equipments and mature production experience. Technology center, experiment center and analysis and test center have been built. It has been absorbed as the member of Chinese Coal-machine Industry Association, Chinese Drill Tools Association, and Chinese Tungsten Association in succession. The company has the import and export self-operated right. These years the company have being following the excellent tradition, having a thorough control and providing the new and high quality product and faithful service to the market. The main products of the company are Long Yuan brand cemented carbide, cobalt salt, nickel salt, the tools for mine, geology and road construction. It also produces the original materials of cemented carbide: tungsten powder, cobalt powder, nickel powd