Shigenori Kosai

Seibu Electric Industry Co., Ltd. engages in the information and telecommunication construction and solution businesses. It operates through the following segments: Information and Telecommunication Construction (ITC), Solutions, Equipment and Environment, and Others. The ITC segment deals with the design, construction, and maintenance of communication cable works such as fiber optic cable, network works, and mobile communication works. The Solutions segment offers construction of networks such as local area network, and wide area network (LAN/WAN), information security systems, and optical IP (Internet Protocol) telephony equipment. The Equipment and Environment segment deals with pipe construction related to electricity, gas, water supply, and drainage. The Others segment includes transportation and leasing businesses. It also designs, constructs, and maintains environmental projects such as purification and waste incineration equipment construction, photovoltaic power generation, and power distributions business. The company was founded on July 3, 1947 and is headquartered in Fukuoka, Japan.

Nippon Telegraph & Telephone West Corp. provides regional telecommunication services in the western parts of Japan. The firm's activities include telephone services, integrated digital communications services, leased circuit services and other telecommunication-related activities. The company was founded on July 1, 1999 and is headquartered in Osaka, Japan.