| Business | Phone |
| Federal-Mogul Corp 44064 Plymouth Oaks Blvd, Plymouth 48170 | (734) 582-5200 |
| Industrial Strainer Co 695 Amelia St, Plymouth 48170 | (734) 453-7600 |
| Lear Corporation 47828 Halyard Dr, Plymouth 48170 | (734) 207-6300 |
| Johnson Controls Inc 49200 Halyard Dr, Plymouth 48170 | (734) 254-5000 |
| Tram Inc 47200 Port St, Plymouth 48170 | (734) 254-8500 |
| Visteon Climate Control Systs 45000 Helm St, Plymouth 48170 | (734) 451-9208 |
| Usui International Corp 45650 Mast St, Plymouth 48170 | (734) 354-3626 |