| Business | Phone |
| Jad Engineering Svc Inc 31455 Northwestern Hwy, Farmington Hills 48334 | (248) 737-4639 |
| Spancorp Inc 29226 Orchard Lake Rd, Farmington Hills 48334 | (248) 538-5333 |
| Electronic Consultants 30811 Ridgeway Dr, Farmington Hills 48334 | (248) 474-1850 |
| Fusion Tech Inc 34133 Ramble Hills Dr, Farmington Hills 48331 | (734) 953-9079 |