Nittoc Construction Co., Ltd. engages primarily in specialized civil engineering and construction works in Japan, focusing on disaster prevention, environmental conservation, maintenance and renovation, and urban regeneration projects. The company offers a broad range of services including re-vegetation; temporary anchoring; river and shore embankment protection; slope protection; landslide protection; rock slope failure prevention; anchoring; retaining walls; structure diagnosis; ground improvement; piling; reinforcement and foundation works; industrial waste recycling; liquefaction prevention measures; foundation treatment for waste disposal sites; slope reinforcement; concrete structure diagnosis, investigation, and upgradation; rock slope diagnosis; existing structure reinforcement; repairing and structural improvement; grouting; applied engineering; shield and pipe jacking; geological surveys; design services; social infrastructure development for transport; electric power infrastructure for renewable energy and environmental protection; disaster recovery and prevention; and cultural property conservation. Established in 1947 and headquartered in Tokyo, Japan, at Daiwa Higashi-nihonbashi Building, Chuo-ku, Nittoc Construction operates mainly within Japan through its subsidiaries and serves public and private sector clients in the construction industry; it functions as a subsidiary of AN Holdings Corp. In recent developments, the company completed the acquisition of a 30.17% stake in Aso Foam Crete Co., Ltd. for approximately Y700 million in January 2025, following a proposed purchase of up to 37.89% announced in December 2024, to expand its capabilities in specialized construction materials and techniques.