Baowu Magnesium Technology (宝武镁业科技股份有限公司, formerly known as Nanjing Yunhai Special Metals) is a company that manufactures light metal materials. It is engaged in mining, non-ferrous metal smelting, mold development, and die casting from magnesium, aluminum and magnesium alloys, strontium, and master alloys. The company caters to the automotive, electronics, aerospace, and other industries.