Mitsui Mining & Smelting Co., Ltd. engages in the manufacture and sale of functional engineered materials and electronic materials. It also manufacture and sale of automotive parts and components; nonferrous metal smelting; minerals resource development; precious metal recycling; and raw material related businesses. The company operates its business through following segments: Engineered Materials, Metals, Automotive Parts & Components, and Affiliates Coordination. The Engineered Materials segment consists of battery materials, automotive catalysts, engineered powders, rare metals, and single crystals. The Metals segment engages in the zinc, copper and precious metals. The Automotive Parts & Components segment produces functional automotive parts. The Affiliates Coordination segment offers magnesium, aluminum and zinc die-cast products, and also offers plates and coils made using copper, copper alloys, and brass which is an alloy of copper and zinc, as well as various other rolled copper products. Mitsui Mining & Smelting was founded on May 1, 1950 and is headquartered in Tokyo, Japan.