Penta-Ocean Construction Co., Ltd. is a construction enterprise actively involved in both civil engineering and building projects, with operations spanning Japan, Southeast Asia, and various international locations. The company structures its activities into three core divisions: Domestic Civil Engineering, Domestic Building Construction, and its Overseas ventures. Its extensive service portfolio encompasses a wide array of infrastructure and facility development, including maritime structures like ports and harbors, airports, power generation plants, dams and river control systems, water and sewer networks, bridges, roads, tunnels, and railway systems.