Tetsuji Usami

KI Holdings Co., Ltd. engages in the management of its group companies which are in the transportation and electrical equipment-related businesses. It operates through the following segments: Transportation Equipment, Electronic Equipment, and Housing and Environment. The Transportation Equipment segment includes railway lighting, control equipment, monitor systems, information display systems, and railway and aircraft seats. The Electronic Equipment segment offers road and tunnel lighting, road information display systems, tunnel emergency warning systems, traffic management systems, and traffic light equipment. The Housing and Environment segment provides bathroom ventilations, heaters, automatic wash basins, hand dryers, baby seats, bio-related systems, and air ventilation equipment. The company was founded by Genrokuro Koito on April 1, 1915 and is headquartered in Yokohama, Japan.

Part of Koito Manufacturing Co., Ltd., Nissei Industries Co., Ltd. is a manufacturer of the T20-type incandescent bulb, which is used as a genuine light bulb by car makers worldwide. The company is based in Shizuoka, Japan and produces the bulb on the largest line in Japan. The bulb's quality is widely recognized overseas. The Japanese company uses encryption technology for pages that require personal information.