Miyaji Engineering Group,Inc., through its subsidiaries, engages in the construction and civil engineering activities in Japan. The company produces, erects, installs, maintains, and repairs bridges, steel frames, and other steel structures; designs and produces prestressed concrete; and constructs, manages, and assembles steel frames, steel towers, and large space structures. It sells bolts and welding materials; and provides staffing and other services. The company was founded in 2003 and is headquartered in Tokyo, Japan.