| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Sauer Compressors USA | USA | |
| 2 | Aerzen Screw Compressor Division | USA | |
| 3 | Hydro-Pac | USA | |
| 4 | Haskel International | USA | |
| 5 | Aerzen Process Gas Division | USA | |
| 6 | Universal Air & Gas Products (aka Universal Air Products Corp.) | USA | |
| 7 | FLSmidth Inc. | USA | |
| 8 | Aerzen | USA | |
| 9 | Elliott Group | USA | |
| 10 | Norwalk Compressor Co. Inc. | USA | |
| 11 | PDC Machines Inc. | USA | |
| 12 | PumpWorks LLC | USA | |
| 13 | Bauer Compressors Inc. | USA | |
| 14 | RIX Industries | USA | |
| 15 | Cobey Inc. | USA | |
| 16 | Nuvair | USA | |
| 17 | Hitachi America Ltd. Industrial Systems Division | USA | |
| 18 | Micro-Design Inc. | USA | |
| 19 | Jordair Compressors Inc. | USA | |
| 20 | Neptech Inc. | USA |
