Dowa. 

Dowa Holdings Co., Ltd. is a long-standing Japanese enterprise, founded in Tokyo in 1884. This global company, which adopted its current name in October 2006 after previously being known as Dowa Mining Co., Ltd., operates across a diverse portfolio of industrial sectors worldwide. Its core business segments include: Environmental Management & Recycling: This division delivers comprehensive environmental solutions, including the processing of various wastes, overseeing controlled landfill operations, and remediating contaminated soil. It also specializes in recycling metals, household appliances, and vehicles, while offering environmental consulting and logistics support. Nonferrous Metals: This segment is responsible for the production and distribution of a wide array of nonferrous metals and chemical compounds. Its offerings feature precious metals like gold, silver, palladium, and platinum, along with base metals such as copper, lead, zinc, and their alloys, as well as tin, antimony, bismuth, indium, tellurium, nickel sulfate, and sulfuric acid. Electronic Materials: Dedicated to the electronics industry, this segment manufactures advanced materials. Products include high-purity substances, gallium arsenide (GaAs) substrate wafers, light-emitting diodes (LEDs), and various metallic powders such as silver, copper, carrier, and ferrite powders. Metal Processing: This operation manufactures a variety of processed metal products. These range from copper, brass, and specialized copper-nickel alloy strips to reflow tin plated strips, brass rods, forged brass items, precious metal plated goods, and metal-ceramics substrates. Heat Treatment: This division's expertise covers the design, manufacturing, and maintenance of diverse industrial furnaces and their auxiliary equipment, in addition to providing heat and surface treatment services. Furthermore, Dowa Holdings also involves itself in ancillary activities like leasing real estate, managing plant and civil engineering construction, offering office administration support, and spearheading technological development projects.