Dowa. 

Dowa Holdings Co., Ltd. engages in the environmental management and recycling, nonferrous metals, electronic materials, metal processing, and heat treatment businesses worldwide. The company's Environmental Management & Recycling segment offers intermediate waste treatment, controlled landfilling, and soil remediation services; metal, household appliance, and automobile recycling services; consulting on environmental matters; and environmental logistics services. Its Nonferrous Metals segment produces and sells gold, silver, copper, lead, zinc, zinc alloys, palladium, rhodium, tin, antimony, nickel sulfate, bismuth, indium, platinum, tellurium, and sulfuric acid. The company's Electronic Materials segment offers high-purity materials, GaAs substrate wafers, and light-emitting diodes, as well as silver, copper, metal, carrier, and ferrite powders. Its Metal Processing segment provides copper, brass, copper and nickel alloy strips, reflow tin plated strips, brass rods, forged brass products, precious metal plating products, and metal-ceramics substrates. The company's Heat Treatment segment is involved in the design, manufacture, and maintenance of various types of industrial furnaces and ancillary equipment, as well as heat and surface treatment. It also constructs and maintains plants and machinery, as well as heavy weight concrete work; manages golf courses and real estate; and provides general business, technological development support, analysis and evaluation, and environmental measurement services. The company was formerly known as Dowa Mining Co., Ltd. and changed its name to Dowa Holdings Co., Ltd. in October 2006. Dowa Holdings Co., Ltd. was founded in 1884 and is headquartered in Tokyo, Japan.