Osamu Numata

Sumikin Bussan Corp. engages in the sale, import, and export of steel, industrial supply and infrastructure, textile, and food products. It operates through the following segments: Steel, Industrial Supply and Infrastructure, Textile, Foodstuff, and Other. The Steel segment consists of various steel products, construction materials, and raw materials. The Industrial Supply and Infrastructure segment involves nonferrous metals, machinery metals, cast and forged steel, and railway wheels. The Textile segment includes yarns, fabrics, clothing materials, beddings, interior items, uniforms, and undergarments. The Foodstuff segment comprises of beef, pork, mutton, chicken, and marine products. The Other segment engages in real estate and other transactions. The company was founded on April 12, 1941 and is headquartered in Osaka, Japan.

Part of NIPPON STEEL CORP., Rojana Power Co. Ltd. distributes electric power. The company is based in Bangkok, Thailand. Jirapongs Vinichbutr has been the CEO of the Thai company since 1996.