China Tungsten and Hightech Materials (中钨高新材料股份有限公司, formerly known as Hainan Jinhai, 海南金海股份有限公司) is a company that operates in the nonferrous metals industry. It is engaged in the mining, smelting, processing, and trade of tungsten, molybdenum, bismuth, fluorite, and carbide. The company also offers drilling and carbide tools, rollers, hard alloy pellets, carbide-rod profiles, hard surface materials, and other products to automobile manufacturing, aerospace, military, shipbuilding, marine, and IT industries.