Tetsuo Ohtsu

Part of SE Corp., SE Repair KK is a Japanese company that engages in civil engineering and construction works. The company is based in Fukuoka, Japan.

Part of SE Corp., SE A & K Co. Ltd. is a Japanese company that manufactures and distributes screws, bolts, and steel construction products. The company is based in Sukagawa, Japan.

SE Tekken KK manufactures and processes steel products and structures. Its products include H steel track and ring products, bridge and building seismic reinforcement, pallet rack items, tanks, and pipe processing products. The company was founded on March 1, 1962 and is headquartered in Kariya, Japan.

Nakagawa Iron Works Co., Ltd. is a private company that specializes in the production of long and large metal parts used in various fields such as cars, boats, architecture, civil engineering, environmental, energy, and medical care. The company is challenging cutting-edge environments and energy, such as shale gas and seismic control devices. The company is based in Hakusan, Japan. The Japanese company manufactures a large roller shaft case in the factory by a maximum of 14m long machine processing and a large machine processing of a maximum amount of 15t. The company was founded in January 1920 and has been inherited for nearly a century.

Morita Kosan YK is a Japanese company that engages in steel contracting services. The company is based in Saihaku-gun, Japan. Morita Kosan YK was acquired by SE Corp. on April 02, 2015 for $1.93 million.