Nikken Kogaku Co., Ltd. engages in the leasing of steel formwork and in the manufacture and sale of concrete blocks and engineering sheets. It operates through the Formwork Leasing and Material and Product Sales segments. The Formwork Leasing segment leases steel formwork for wave dissipating block production. The Material and Product Sales segment sells concrete secondary products manufactured at factory such as wave dissipating blocks, natural fieldstone products, and civil engineering sheet products to prevent water leakage. The company was founded on March 25, 1964 and is headquartered in Tokyo, Japan.