Geostr Corp

Headquartered in Tokyo, Japan, GEOSTR Corporation is a company established in 1958 that specializes in the production and distribution of precast concrete components for civil engineering projects throughout the nation. The firm offers a comprehensive range of products, including shield and mountain tunnel segments, various types of culverts (such as box, arch, and earthquake-resistant designs), pavements, bridges, retaining walls, piers, coastal defenses like seawalls and guard fences, concrete slabs, tunnel linings, and precast concrete panels. These essential materials are utilized across numerous infrastructure developments, including roads, railways, water supply and sewage networks, river and waterway management, utility tunnels (for electricity and gas), reservoirs, dams, harbors, airports, and defense initiatives. The company operated under the name Nippon Concrete Industries Co., Ltd. until its rebranding to GEOSTR Corporation in July 1994.