| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Amperite Co. | USA | |
| 2 | Struthers-Dunn Inc. | USA | |
| 3 | SE Relays | USA | |
| 4 | Bender Inc. | USA | |
| 5 | Hasco Relays & Electronics International Corp. | USA | |
| 6 | Relay Service Co. | USA | |
| 7 | Cougar Electronics Corp. | USA | |
| 8 | Instrumentation & Control Systems Inc. | USA | |
| 9 | TE Connectivity | USA | |
| 10 | Macromatic Industrial Controls Inc. | USA | |
| 11 | SSAC Inc. | USA | |
| 12 | PICS INC | USA | |
| 13 | ACI Advance Controls Inc. | USA | |
| 14 | Basler Electric Co. | USA |
