- Action Plastics
- Aiken Underground Inc
- All State Utility Supply
- Allied Tube & Conduit Corp
- Allied Tube & Conduit Corp
- Andrex
- Anthony's Electric
- Cal-Duct Inc
- Cal-Duct Inc
- Central Valley Underground
- CMP Motor Sports
- CMP Speciality Products Inc
- CMP Specialty Products Inc
- Conduit Specialties
- Conduit Technologies
- Danielson Construction
- Ecn/Korns
- Electri-Flex Co
- Herman Weissker Inc
- Horizon Underground Inc
- Hughes Supply Inc
- Hughes Supply Inc
- JLCL Inc
- M R Distributing Inc
- Madison Equipment Co
- Midwest Underground
- Redline Directional Inc
- Republic Conduit
- S M & P Utility Resources
- Schilling Corp
- Southeast Trenchers
- Taft Electric Co
- Wesco Distributing Inc
- Wesco Distributing Inc
- Wesco Distributing Inc
- Wesco Distributing Inc
