Dowa. 

Dowa Holdings Co., Ltd. engages in the environmental management and recycling, nonferrous metals, electronic materials, metal processing, and heat treatment businesses. The company offers Incineration of industrial waste; landfilling of waste; melting and recycling of incinerated ash; surveys and remediation of soil; environmental consulting; recycling of metal and discarded household appliances; and treatment of automotive shredder dust services. It also provides gold, silver, copper, lead, tin, antimony, nickel sulfate, zinc, zinc alloys, indium, and sulfuric acid metals; recycling of platinum-group metals; and resource and raw material procurement services. In addition, the company offers high-purity materials, gallium arsenide wafers, infrared LEDs, and ultraviolet LEDs; electronic materials, including silver, copper, and conductive atomized powder; advanced fine materials, such as magnetic, carrier, ferrite, and compound oxide powder; and copper alloy strips, nickel alloy strips, reflow tin-plated strips, forged brass, as well as products. Further, it provides precious metal electroplating services; design, manufacture, marketing and maintenance of heat treatment facilities; and heat and surface treatment 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.