- AEG
- Allen-Bradley
- American Dynamics
- Andover Controls
- AutomationDirect
- Cognex
- Cutler-Hammer
- Festo
- GE Fanuc
- Gould
- IDEC
- Keyence
- Koyo
- Mitsubishi
- Modicon
- Omron
- PLC Direct
- PULNiX
- Reliance Electric
- Schneider
- Sharp
- Siemens
- Square D
- Telemecanique
- Texas Instruments
- Toyopuc
- Yaskawa