Toho Zinc Co., Ltd. engages in the manufacture and sale of non-ferrous metals and electronic components. It operates through the following segments: Smelting, Mineral Resource, Electronic Components and Materials, Environment and Recycling, and Other. The Smelting segment produces and sells non-ferrous metals such as zinc, lead, silver, and sulfur. The Mineral Resource segment deals with the exploration and development of non-ferrous metal resources. The Electronic Components and Materials segment manufactures and sells electronic components, electrolytic iron, plating, and machine parts. The Environment and Recycling segment engages in the production of zinc oxide and recycling of waste materials. The Other segment includes soundproof construction materials, civil engineering, construction, plant engineering, transportation, and environmental analysis businesses. The company was founded on February 27, 1937 and is headquartered in Tokyo, Japan.