Hiroaki Koyama

Sumitomo Mitsui Construction Steel Structures Engineering Co., Ltd. engages in the design, manufacture, assembly, installation of bridges, water gates and other steel structures, building structures, coastal structures, wind power plants, cranes and other transportation machinery. It also provides investigation, inspection, diagnosis, repair, modification and supervising of all mentioned products. The company was founded on February 20, 1974 and is headquartered in Chiba, Japan.

Sumitomo Mitsui Construction Steel Structures Engineering Co., Ltd. engages in the design, manufacture, assembly, installation of bridges, water gates and other steel structures, building structures, coastal structures, wind power plants, cranes and other transportation machinery. It also provides investigation, inspection, diagnosis, repair, modification and supervising of all mentioned products. The company was founded on February 20, 1974 and is headquartered in Chiba, Japan.

Sumitomo Mitsui Construction Steel Structures Engineering Co., Ltd. engages in the design, manufacture, assembly, installation of bridges, water gates and other steel structures, building structures, coastal structures, wind power plants, cranes and other transportation machinery. It also provides investigation, inspection, diagnosis, repair, modification and supervising of all mentioned products. The company was founded on February 20, 1974 and is headquartered in Chiba, Japan.

Sumitomo Mitsui Construction Steel Structures Engineering Co., Ltd. engages in the design, manufacture, assembly, installation of bridges, water gates and other steel structures, building structures, coastal structures, wind power plants, cranes and other transportation machinery. It also provides investigation, inspection, diagnosis, repair, modification and supervising of all mentioned products. The company was founded on February 20, 1974 and is headquartered in Chiba, Japan.

Sumitomo Mitsui Construction Steel Structures Engineering Co., Ltd. engages in the design, manufacture, assembly, installation of bridges, water gates and other steel structures, building structures, coastal structures, wind power plants, cranes and other transportation machinery. It also provides investigation, inspection, diagnosis, repair, modification and supervising of all mentioned products. The company was founded on February 20, 1974 and is headquartered in Chiba, Japan.