Yamau Holdings Co., Ltd. manufactures and sells concrete products in Japan. The company manufactures, constructs, and maintains water gates and weirs; offers geological survey, consulting, and civil engineering work services; conducts inspection and investigation, and repair works for concrete structures; and sells and maintains Information office equipment. It is also involved in manufacture, sale, and installation of expansion joints for bridges and elevated roads. The company was formally known as Yamau Corporation and changed its name to Yamau Holdings Co., Ltd., in 2021. Yamau Holdings Co., Ltd. was founded in 1958 and is headquartered in Fukuoka City, Japan.