| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Amperite Co. | USA | |
| 2 | Rockwell Automation | USA | |
| 3 | SE Relays | USA | |
| 4 | SSAC Inc. | USA | |
| 5 | NTE Electronics Inc. | USA | |
| 6 | PICS INC | USA | |
| 7 | TE Connectivity | USA | |
| 8 | Turck Inc. | USA | |
| 9 | Instrumentation & Control Systems Inc. | USA | |
| 10 | Macromatic Industrial Controls Inc. | USA | |
| 11 | Deltrol Controls | USA | |
| 12 | DARE Electronics Inc. | USA | |
| 13 | STK Electronics Inc. | USA |
