| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Sauer Compressors USA | USA | |
| 2 | Universal Air & Gas Products (aka Universal Air Products Corp.) | USA | |
| 3 | Aerzen Screw Compressor Division | USA | |
| 4 | Atlas Copco Compressors LLC | USA | |
| 5 | JMA Rail Products | USA | |
| 6 | Gardner Denver Inc. | USA | |
| 7 | RIX Industries | USA | |
| 8 | Sullivan-Palatek Inc. | USA | |
| 9 | Bauer Compressors Inc. | USA | |
| 10 | Atlas Copco | USA | |
| 11 | Hadley Products | USA | |
| 12 | Knox Western | USA | |
| 13 | Engineering Concepts Unlimited Inc. | USA | |
| 14 | Dunn-Right Inc. | USA |
