Masayuki Kobayashi

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.

Toa Oil Co., Ltd. engages in the petroleum refining and electrical power generation businesses. It operates through the following divisions: Refining Business, Generation Business, Facilities. The Refining Business division provides refinery of gasoline, kerosene, light oils, and heavy oils. The Generation Business division engages in the supply of electricity and steam necessary for oil refinery through pipelines, boiler and gas turbines. The Facilities division provides oil-refining and power-generation equipment. It also supplies petroleum products to Kanto region. The company was founded on February 6, 1924 and is headquartered in Kawasaki, 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.

Part of Shell Plc, Showa Yokkaichi Sekiyu Co., Ltd. engages in processing and wholesale of petroleum products and petrochemicals. The company is based in Yokkaichi, Japan.