DN HOLDINGS CO. LTD.

DN Holdings Co., Ltd. operates in the construction consulting and geological survey businesses in Japan. It is involved in the design of bridges and road structures, as well as survey, design, construction supervision, environmental impact reduction, and sustainable town development of compact plus networks from road, town, and environment perspectives. The company also conducts land suitability investigations for underground CO2 storage and provides ground investigation and analysis technology. Founded in 1963, it is headquartered in Tokyo, Japan.