| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Ashcroft Inc. | USA | |
| 2 | WATTCO | USA | |
| 3 | Micro-Epsilon | USA | |
| 4 | Aero Space Controls Corp. | USA | |
| 5 | Sensonetics Inc. | USA | |
| 6 | RAM Sensors Inc. | USA | |
| 7 | Minco | USA | |
| 8 | TT Electronics | USA | |
| 9 | Watlow | USA | |
| 10 | Thermocoax Inc. | USA | |
| 11 | LOFA Industries | USA | |
| 12 | Thermo Sensors Corporation | USA | |
| 13 | Sensor Scientific Inc. | USA | |
| 14 | W. H. Cooke & Co. Inc. | USA | |
| 15 | United Sensor Corporation | USA | |
| 16 | Ultra Energy | USA | |
| 17 | Quality Thermistor Inc. | USA | |
| 18 | Aircraft Battery Shop | USA | |
| 19 | PICS INC | USA | |
| 20 | Custom Control Sensors Inc. | USA | |
| 21 | Pulsar Aviation Services Inc. | USA |
