Mitsui Kinzoku. 

Mitsui Mining & Smelting Co., Ltd. manufactures and sells nonferrous metal products in Japan and internationally. The company operates through four segments: Engineered Materials, Metals, Automotive Parts & Components, and Affiliates Coordination. It manufactures engineered powders comprising ultra-fine powders for electronic materials, powder metallurgy, and solder powders; rare metals, such as tantalumu and niobium oxides and carbides, and cerium oxide abrasives; battery materials, including hydrogen storage alloys, and lithium manganese oxides; catalysts; copper foils; PVD materials; and ceramics for electronic components. The company also offers side door latches, back door latches, hood latches, etc. for automobiles; perlite for processing and cooling; Nenisanso, a soil improvement material; and ROKAHELP, a perlite-based filter aid. In addition, it smelts and recycles nonferrous metals comprising zinc, zinc base alloys, lead, tin, bismuth, antimony trioxide, copper, gold and silver, and sulfuric acid; explores for copper and zinc ores; operates geothermal power plant; and provides resource development and environmental conservation related engineering services. Further, the company offers zinc and lead ingots, zinc sulfate, crude zinc oxide, zinc raw materials, and sulfuric acid and plaster products; chemical products; optical crystals, scintillators, and radiation detectors; aluminum- and magnesium-related die-casted products; rolled copper products; and grinding wheels;. Additionally, it engages in the mechatronics and corrosion prevention businesses; handling wires and cables activities; and provision of engineering services and IT systems. The company was formerly known as Kamioka Mining and Smelting Co., Ltd. and changed its name to Mitsui Mining & Smelting Co., Ltd. in 1952. Mitsui Mining & Smelting Co., Ltd. was founded in 1874 and is headquartered in Tokyo, Japan.