| Business | Phone |
| Aerostar Manufacturing 28275 Northline Rd, Romulus 48174 | (734) 942-0615 |
| Cartell 34450 Goddard Rd, Romulus 48174 | (734) 941-5400 |
| Future Testing & Mfg 28900 Goddard Rd, Romulus 48174 | (734) 947-9401 |
| L David Industries 38000 Jay Kay Dr, Romulus 48174 | (734) 467-7794 |
| Factory Fitness 17255 Buckeye Ln, Romulus 48174 | (248) 867-0567 |
| Group B Industries Inc 15399 Oakwood Dr, Romulus 48174 | (734) 941-6640 |
| Kozna Industries Romulus 48174 | (734) 941-7485 |
| Lady D Light 9304 Chamberlain St, Romulus 48174 | (734) 941-9952 |
| United Brass Mfr Inc 39000 W Huron River Dr, Romulus 48174 | (734) 942-9224 |
| Vanderlande Industries 1460 Midfield Dr, Romulus 48174 | (734) 955-9233 |