Yamau Holdings Co., Ltd., together with its subsidiaries, manufactures and sells concrete products in Japan. The company offers secondary, conventional, architectural, and precast concrete products; manufactures, constructs, and maintains floodgates, weirs, and dust collectors; and geological surveys, consulting, and civil engineering work services. It also provides concrete structure inspection, investigation, and repair works; sells and maintains information and office equipment; and manufactures, sells, and installs expansion joints for viaducts, bridges, and elevated roads. The company was formally known as Yamau Co., Ltd. and changed its name to Yamau Holdings Co., Ltd. in April 2021. Yamau Holdings Co., Ltd. was founded in 1958 and is headquartered in Fukuoka City, Japan.