| Business | Phone |
| A-1 Truck Chrome & Stainless 35548 Industrial Rd, Livonia 48150 | (734) 432-4000 |
| Borg Warner 32059 Schoolcraft Rd, Livonia 48150 | (734) 261-5322 |
| Drives & Shafts Specialties 27559 Schoolcraft Rd, Livonia 48150 | (734) 522-9440 |
| Gm Powertrain Livonia Engine 12200 Middlebelt Rd, Livonia 48150 | (734) 523-0200 |
| Nyx 38700 Plymouth Rd, Livonia 48150 | (734) 464-0800 |
| Sequoia Industries Inc 11813 Hubbard St, Livonia 48150 | (734) 261-4470 |
| Roush Tooling & Mfg 38099 Schoolcraft Rd, Livonia 48150 | (734) 805-4400 |
| Skytek 35588 Veronica St, Livonia 48150 | (734) 464-3811 |
| Gentex Corp 37641 Pembroke Ave, Livonia 48152 | (734) 464-3970 |
| Trw Automotive 18252 N Laurel Park Dr, Livonia 48152 | (734) 853-6844 |