- Allen Bradley
- Amphenol
- Baldor
- Balluff
- Banner
- Bussman
- Brad Harrison
- Crouse-Hinds
- Cuttler-Hammer
- Duracell
- General Electric
- Gould
- Hoffman
- Olflex
- Omron
- Osram
- Rees
- Siemens
- Sola
- Square D
- Telemecanique
- Thomas & Betts
- Texas Instruments
- Turck
- Varta
- Veeder Root
