Kajima 

Kajima Corporation engages in civil engineering, building construction, real estate development, architectural and civil design, and other businesses. It is involved in the construction of power stations, railways, roads, airports, and seaports, as well as water purification and wastewater treatment plants, steel works, and chemical production facilities; and research and development in various fields, including skyscrapers, nuclear power plants, long span bridges, and deep underground tunnels. It also offers specialized technologies and services for production and R&D facilities, logistic facilities, plant factories, cell culture facilities, and other applications; and develops and maintains social infrastructure using various technologies related to zero energy bildings, green infrastructure, soil and underground water remediation, water and sewer treatment facilities, and final disposal sites, as well as wind power generators, other renewable energy facilities, biomass utilization, and waste reduction. In addition, it provides design and construction; and engineering services. The company was founded in 1840 and is headquartered in Tokyo, Japan.