OTEC CORPORATION is mainly engaged in the sale of pipe equipment and materials. The Company operates in three business segments. The Pipe Equipment and Material Sales segment is engaged in the purchase and sale of steel pipes, joints, valves, sanitary ware and housing equipment. The Construction segment is engaged in the instrumentation works, electric works and maintenance works for both new and existing buildings. The Environment-related Equipment Sales segment is engaged in the sale of environment-related equipment. As of March 31, 2015, the Company had six subsidiaries, one associated company and one affiliated company.