Tekken Corporation engages in the construction business in Japan and internationally. It operates through four segments: Civil Engineering Works, Architectural Construction, Real Estate Business, and Ancillary Business. The company develops social infrastructure projects, such as roads, tunnels, bridges, water and sewage systems, and riverbank protection; railroad infrastructure, including railroad viaducts, bridges, tunnels, stations, station buildings, and train depots; and construction buildings such as office buildings, apartments, schools, and medical and welfare facilities. It is also involved in the sales of construction equipment and environmental products, real estate, non-life insurance agency, security services, machinery rental, and temporary staffing services; manufacturing, sales, transportation, rental, and repair of materials and machinery for civil engineering and construction work; and businesses incidental or related to the preceding items. In addition, the company provides construction and technical guidance of civil engineering and building work; planning and consulting services for civil engineering and construction projects; and training and education services, as well as support services for construction works. Further, it engages in planning, development, production, and sales of publications, printed materials, videos, and digital content; provision of civil engineering construction management services; operation of strawberry tourist farm; supply and sale of small wood biomass gasification power generation and small hydropower generation; and early paulownia cultivation business. Tekken Corporation was incorporated in 1944 and is headquartered in Tokyo, Japan.