Pentax
- Produces cameras, lenses, scopes, binoculars, accessories, and medical equipment.
- http://www.pentax.co.jp/

Copal Electronics
- Maker of potentiometers, switches, pressure sensors, rotary encoders, motors, polygon laser scanners, and fans.
- http://www.copal-electronics.com/e

Combi Corporation
- Active in the development, manufacture, sale, export and technical licensing of juvenile products, toys and games, exercise machines, home health apparatus and medical devices.
- http://www.combi.co.jp/

Canare Electric Co., Ltd.
- Makes fiber-optic systems, connectors, tools, cables, patchbays, multi-channel systems and cable assemblies.
- http://www.canare.co.jp/oversea/mainmenu.html

Aiphone Corporation
- Manufacturer of intercom solutions for communication and security, providing audio and video systems, specializing in access entry and control systems.
- http://www.aiphone.com/

Telecommunication Technology Committee
- Contributes to standardization in the field of telecommunications by establishing protocols and standards for telecommunications networks and terminal equipment, as well as to disseminate those standards.
- http://www.ttc.or.jp/