- A Tek LLC
- ABB Inc
- Air-O-Tronics
- Allied Controls Acquisition
- Altech Corp
- American Electronic Components
- American Relays Inc
- American Relays Inc
- Authorized Parts Inc
- Beyond Components
- Beyond Components
- Burleigh Institute
- Cardinal Control Co
- Computer Components Inc
- Control Design Supply
- Coto Corp
- Cyber-Tech Inc
- Deutsch Relays Inc
- Dow-Key Microwave Corp
- Finder Relays Inc
- Gigavac
- Global Components & Controls
- Goodman Components Inc
- Ground Fault Inc
- Honeywell International
- Industrial Control & Supply
- Infitec Inc
- Leach International Corp
- Leach International Corp
- Liebert Corp
- Lovejoy Controls Corp
- Matrix Systems Corp
- MDI
- Meder Electronic
- Meder Electronic
- Meder Electronic Inc
- Modesto Relays
- National Subcontractors
- Precision Switching Inc
- Precision Switching Inc
- Relay Specialties
- Relay Specialties Inc
- Relay Specialties Inc
- Relay Testing Svc
- Relay Testing Svc LLC
- Richardson Electric Inc
- Safetran Systems Corp
- Schweitzer Engineering Lab
- Schweitzer Engineering Labs
- Shuan Yuan Corp
- Sky Electronics
- Solid State Optronics Inc
- Struthers Dunn LLC
- Triridge Corp
- USA Relay Telecommunications