- Honda Motor Co., Ltd.
- Honda R&D Co., Ltd.
- Honda Access Corporation.
- Honda Racing Corporation.
- Honda Techno Fort Co., Ltd.
- Honda Power Products Japan Co., Ltd.
- Stanley Electric Co., Ltd.
- TS Tech Co., Ltd.
- Hitachi Astemo, Ltd.
- Yamada Manufacturing Co., Ltd.
- FUJIFILM Business Innovation Corp.
- Taka Infotechno Co., Ltd.
- Nippon Thermostat Co., Ltd.
- Gissing Tech. Co.,Ltd.
- MANI,INC.