| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Amperite Co. | USA | |
| 2 | SE Relays | USA | |
| 3 | RelComm Technologies Inc. | USA | |
| 4 | TE Connectivity | USA | |
| 5 | PICS INC | USA | |
| 6 | R-K Electronics Inc. | USA | |
| 7 | Macromatic Industrial Controls Inc. | USA | |
| 8 | c3controls | USA | |
| 9 | Fairchild Industrial Products a Rotork Instruments company | USA | |
| 10 | Deltrol Controls | USA |
