| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | ZETWERK Manufacturing USA Inc. | USA | |
| 2 | Samco Sales Inc. | USA | |
| 3 | AMPCO METAL | USA | |
| 4 | All Metals & Forge Group LLC | USA | |
| 5 | Mueller Streamline Co. | USA | |
| 6 | RPM Engineering Corp. | USA | |
| 7 | American Axle & Mfg. Inc. (AAM) | USA | |
| 8 | Kaiser Aluminum | USA | |
| 9 | Cadi Company Inc. | USA | |
| 10 | United Performance Metals | USA | |
| 11 | Hirschvogel Inc. | USA | |
| 12 | Lansing Forge Inc. | USA | |
| 13 | Precision Tube Company LLC | USA | |
| 14 | Mueller Impacts Company Inc. | USA | |
| 15 | Utica Metal Products | USA | |
| 16 | Lakeview Forge Co. | USA | |
| 17 | Piper Impact | USA |
