Dowa Holdings Co., Ltd. engages in the management of its group companies which are into environment and recycling, smelting, electronic materials, metal processing, and, heat treatment businesses. It operates through the following segments: Environmental Management and Recycling, Nonferrous Metals, Electronic Materials, Metal Processing, Heat Treatment, and Others. The Environmental Management and Recycling segment covers waste disposal, recycling, soil remediation, and logistics. The Nonferrous Metals segment includes copper and precious metals, zinc smelting, and rare metals refining. The Electronic Materials segment manufactures and sells semiconductor, electronic, magnetic, inorganic, chemical, and functional materials. The Metal Processing segment deals with metal plating and processing, thermal devices, and substrates. The Heat Treatment segment offers heat and surface modification treatment; and designs, manufactures, sells, and maintains heat treatment facilities. The Others segment provides real estate leasing, plant construction, civil engineering, general construction works, office administration, and technology development support services. The company was founded by Denzaburo Fujita in 1869 and is headquartered in Tokyo, Japan.