Keiyo Gas Co., Ltd. produces, supplies, and sells gas in Japan, operating through its Energy, Life Services, and Real Estate segments. The company also sells gas equipment and provides gas construction and fitting services to residential, commercial, industrial, and other customers. In addition, it sells electricity and engages in gas construction activities, real estate rentals, and related activities. Incorporated in 1926, the company is headquartered in Ichikawa, Japan.