| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | IFM Efector Inc. | USA | |
| 2 | WATTCO | USA | |
| 3 | Reading Thermal | USA | |
| 4 | SMT Research Ltd. | USA | |
| 5 | International Thermal Instrument Co. (ITI Co.) | USA | |
| 6 | W. H. Cooke & Co. Inc. | USA | |
| 7 | Nanmac Corp. | USA | |
| 8 | Tao of Systems Integration Inc. | USA | |
| 9 | Clyde Bergemann Inc. | USA | |
| 10 | Thermocoax Inc. | USA | |
| 11 | Campbell Scientific Inc. | USA | |
| 12 | Omega Engineering Inc. | USA | |
| 13 | Vatell Corp. | USA | |
| 14 | Solar Light | USA | |
| 15 | Durex Industries | USA | |
| 16 | RDF Corporation | USA | |
| 17 | Concept Engineering | USA | |
| 18 | Advanced Thermal and Environmental Concepts Inc. | USA |
