| Business | Phone |
| Vochaska Engineering 66935 County Road 388, South Haven 49090 | (269) 637-5670 |
| Spice Bush Machining Inc 370 62nd St, South Haven 49090 | (269) 253-4596 |
| System Components Inc 1635 Stieve Dr, South Haven 49090 | (269) 637-2191 |
| Quality Four Machining Inc 1447 Saint Joseph St, South Haven 49090 | (269) 637-5468 |
| R S Machining Inc 6917 107th Ave, South Haven 49090 | (269) 639-9124 |