- Design, construction, and supervision of general industrial machinery and equipment - Design, construction, and supervision of electrical installation works - Design, construction, and supervision of power transformation and distribution facilities, remote control devices, and automation control equipment - Design, construction, and supervision of gas piping, oil piping, water supply and drainage, hot water supply equipment, heating and cooling equipment, and kitchen equipment works - Construction and supervision of air conditioning equipment - Design, construction, and supervision of civil engineering works - Design, construction, and supervision of building works - Design, construction, and supervision of fire protection equipment works - Design, manufacturing, repair of general industrial machinery and equipment, and manufacturing of their parts - Design, manufacturing, repair of electrical control devices, and manufacturing of their parts - Design, manufacturing, and installation of environmental equipment - Development, improvement, and sale of land - Buying, selling, leasing, brokering, and managing real estate

Mitsubishi Materials Corporation and others