Kyowanissei 

Kyowanissei Co.,Ltd. engages in the construction and civil engineering business in Japan. Its businesses cover gas facility construction; heating/cooling hot water supply/air conditioning equipment construction; residential solar power generation system construction; gas conduit laying work; road paving work related to gas conduit burial work; and maintenance services in the areas of gas conduit repair work, gas leakage emergency dispatch, and gas security patrol service. The company is also involved in water supply/hot water supply, drainage, ventilation equipment, outdoor water supply/drainage and sewage septic tank facilities, and factory plant construction, as well as sanitation, firefighting, and kitchen equipment construction; air conditioning installation work; and water supply/hot water supply, drainage, ventilation, and other equipment maintenance. In addition, it undertakes electric construction and maintenance works comprising general civil engineering works, such as water supply construction and road paving works; and irrigation works. The company was founded in 1887 and is headquartered in Tokyo, Japan.