| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | AEI | USA | |
| 2 | Struthers-Dunn Inc. | USA | |
| 3 | Jaidinger Manufacturing Co. Inc. | USA | |
| 4 | SE Relays | USA | |
| 5 | Relay Service Co. | USA | |
| 6 | Cougar Electronics Corp. | USA | |
| 7 | TE Connectivity | USA | |
| 8 | Esterline Power Systems | USA | |
| 9 | Jameco Electronic Components & Computer Products | USA | |
| 10 | PICS INC | USA | |
| 11 | NTE Electronics Inc. | USA | |
| 12 | Hasco Relays & Electronics International Corp. | USA | |
| 13 | Deltrol Controls | USA | |
| 14 | ABB Control Inc. | USA | |
| 15 | STK Electronics Inc. | USA | |
| 16 | Airotronics Timers and Controls | USA |
