| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Princo Instruments Inc. | USA | |
| 2 | PICS INC | USA | |
| 3 | Carel USA | USA | |
| 4 | Hampton Controls Inc. | USA | |
| 5 | IFM Efector Inc. | USA | |
| 6 | Thermocouple Technology LLC | USA | |
| 7 | Rockwell Automation | USA | |
| 8 | Pyromation | USA | |
| 9 | Baelz North America | USA | |
| 10 | Orr & Orr Inc. | USA | |
| 11 | Thermal Solutions Products LLC | USA | |
| 12 | Quark Glass LLC | USA | |
| 13 | Minco | USA | |
| 14 | Atkinson Engineering | USA | |
| 15 | Sandelius Instruments Inc. | USA | |
| 16 | Indeeco | USA | |
| 17 | Quality Thermistor Inc. | USA | |
| 18 | FPI Sensors Inc. | USA | |
| 19 | KRIWAN Americas | USA | |
| 20 | Johnson Controls Inc. | USA | |
| 21 | Gems Sensors & Controls | USA | |
| 22 | Enercorp Instruments Ltd. | USA | |
| 23 | W. H. Cooke & Co. Inc. | USA | |
| 24 | The Stutz Company | USA | |
| 25 | Wilcon Industries | USA | |
| 26 | ThermoProbe Inc. | USA | |
| 27 | Thermo Sensors Corporation | USA | |
| 28 | ThermoWorks | USA | |
| 29 | Precision Measurements Inc. | USA |
