Toyo Kohan Co., Ltd. engages in the manufacture and sale of of tinplate, sheet metals, and different types of surface-treated steel sheets as well as a variety of functional materials. It operates through the following segments: Steel Sheet, Functional Materials, and Machinery. The Steel Sheet segment offers functional films for containers, steel plates, and processed steel sheets used as material for electrical and electronic parts, for vehicles, and for external cladding and construction. The Functional Material segment deals with aluminum substrate for magnetic disks and optical functional films. The Machinery segment handles automotive press die and other kinds of die, steel strip for packing materials, machinery instruments, and hard alloys. The company was founded on April 11, 1934 and is headquartered in Tokyo, Japan.