Taiyo Kisokogyo. 

Taiyo Kisokogyo Co.,Ltd. engages in the civil engineering business in Japan. The company undertakes underground special civil engineering work, such as underground continuous walls, underground obstacle removal; and ground improvement and pipeline work in various fields, including general civil works, such as water and sewage, electric and gas pipelines, and rivers and roads, as well as construction works. It is also involved in the soil pollution purification, geothermal heat utilization, and solar power generation; and urban redevelopment activities. The company was founded in 1958 and is headquartered in Nagoya, Japan.