GEOSTR Corporation

GEOSTR provides the manufacture and sale of precast concrete products for civil engineering in Japan. The company provides shield tunnels, precast box and arch culverts, earthquake-resistant precast culverts, mountain tunnels, bridges, earth retaining walls, precast piers, concrete slabs, precast seawalls and guard fences, tunnel linings, precast RC pavements, precast concrete panels, and precast tunnels.

Its products are used in construction of roads, railroads, water and sewage systems, river and waterways, electricity/gas/utility tunnels, reservoirs, dams, ports, airports, and defense projects. Founded in 1958 and based in Tokyo, Japan, GEOSTR was formerly known as Nippon Concrete Industries Co., Ltd. before rebranding in July 1994.