| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Multi-Wing America | USA | |
| 2 | Northern Blower Inc. | USA | |
| 3 | Barber-Nichols Inc. | USA | |
| 4 | Electric Fan Engineering | USA | |
| 5 | Howden North America | USA | |
| 6 | Robinson Fans Inc. | USA | |
| 7 | Dresser-Rand | USA | |
| 8 | Electric Trading Company | USA | |
| 9 | Daltec Fans | USA | |
| 10 | Clarage | USA | |
| 11 | Howden Sirocco Inc. | USA | |
| 12 | Barron Industries Inc. | USA |
