| Business | Phone |
| Automotive Diagnostics 37523 Schoolcraft Rd, Livonia 48150 | (734) 464-2240 |
| Npr Of America Inc 12272 Hubbard St, Livonia 48150 | (734) 458-4010 |
| Roush Laboratories 12445 Levan Rd, Livonia 48150 | (734) 779-7191 |
| Material Control Technologies 17197 N Laurel Park Dr, Livonia 48152 | (248) 542-3688 |