Makoto Sueki

Tanaka Holdings Co. Ltd. manufactures and distributes precious metal products. It operates through its subsidiaries such as Tanaka Kikinzoku Hanbai, Tanaka Kikinzoku International, and Tanaka Denshi Kogyo. The firm offers services to the energy conservation, environmental control, health care, electric and electronics, automobile, telecommunication, and semiconductor industries. The company was founded in 1885 and is headquartered in Tokyo, Japan.

Tanaka Kikinzoku Kogyo KK manufactures, sells, imports, and exports industrial metal products. Its products include platinum, gold, silver and others. The firm also does refining and recycling of precious metals. The company was founded in 1885 and is headquartered in Tokyo, Japan.