GEOSTR Corporation engages in the manufacture and sale of precast concrete products for civil engineering in Japan. The company offers shield tunnels, precast box and arch culverts, earthquake-resistant response precast culverts, pavements, mountain tunnels, bridges, retaining walls, precast piers, precast seawalls and guard fences, concrete slabs, tunnel linings, precast PV and RC pavements, precast concreate panels, and precast tunnels. Its products are used in construction of roads, railroads, water supply and sewage systems, river/waterways, electricity/gas/utility tunnels, reservoirs/ponds, dams, harbors, airports, and defense projects. The company was formerly known as Nippon Concrete Industries Co., Ltd. and changed its name to GEOSTR Corporation in July 1994. GEOSTR Corporation was founded in 1958 and is headquartered in Tokyo, Japan.