| Business | Phone |
| Drivesol Worldwide 1104 W Maple Rd, Troy 48084 | (248) 616-3127 |
| E I Dupont 950 Stephenson Hwy, Troy 48083 | (248) 577-0716 |
| Kautex Textron 750 Stephenson Hwy, Troy 48083 | (248) 577-5480 |
| Delphi Energy & Chassis 5725 Delphi Dr D, Troy 48098 | (248) 813-3754 |
| Delphi Packard Electric 5725 Delphi Dr, Troy 48098 | (248) 813-2334 |