- General Electrical Parts
- IDEC
- Acme Electric
- AFC Fittings
- Allied Tube
- American Saw
- Arlington Ind
- Carlon Electric
- Ferraz Shawmut
- Christy Concrete
- Copper Wire
- Coup Elbow Nipple
- Crouse Hinds
- Day Brite
- Erico
- Finder Relays
- Greenlee
- Ideal Industries
- Juno
- Leviton
- LH Dottie
- Littelfuse
- Murray
- Pass & Seymour
- PVC
- Sprecher Schuh
- Square D Company
- Woodhead
- Electrical Distributors
- 3M Company
- ABB Inc.(Entrelec-ABB)
- Advance Transformer
- Brady
- Burndy Electrical
- Cutler Hammer
- GE Lamps and Lighting
- Hubbell Wiring Devices
- Klein Tools
- Lutron
- Panduit
- Thomas & Betts
- Wiremold Company