SJI Inc. (SJI) is a technology company that provides system development and system related consulting and maintenance support services. The company offers software products and related maintenance and support. Its system development services include system development, system consultancy services, and system maintenance and support. SJI also sells BtoB and BtoC software package products, and information-related equipments. The company’s petrochemical engineering services include procurement, design, and sales of control systems and facilities associated with petrochemical business, and project management. It has presence in Japan and China. SJI is headquartered in Shinagawa, Tokyo, Japan.