Shigeya Kato

RS Energy KK engages in the manufacture and sale of energy-related products. It operates through the following business segments: Oil Business, Energy Solutions Business, and Other. The Oil Business segment supplies gasoline, naphtha, kerosene, diesel oil, fuel oil, liquefied petroleum gas, asphalt, and petrochemical products. The Energy Solutions Business segment offers solar panel systems and electric power. The Other segment includes real estate, construction works, and automobile supplies. The company was founded on August 1, 1942 and is headquartered in Tokyo, Japan.

Seibu Oil Co. Ltd. refines and produces crude oil products. It produces crude oil, oil products and petrochemical raw materials. The company's clients include Sekiyu K.K., Inc, Chugoku Electric Power and Ube Industries, Ltd. Seibu Oil was founded in June 25, 1962 and is headquartered in Tokyo, Japan.

Shell Chemical Japan Ltd. produces and distributes petrochemicals. It provides various chemical, hydrocarbon and cleaning solvents. The company also offers basic chemicals and catalysts. Shell Chemical Japan was founded June 21, 1963 and is headquartered in Tokyo, JAPAN

Solar Frontier KK operates as a CIS thin-film solar energy company by production, sales and technology. The firm’s products include R&D, module production, supply, system solutions, power production, operation and maintenance. The company was founded in 2006 and is headquartered in Tokyo, Japan.