| Business | Phone |
| Bernal Inc 1091 Centre Rd 290, Auburn Hills 48326 | (248) 340-7506 |
| Suburban Tool Inc 4141 N Atlantic Blvd, Auburn Hills 48326 | (248) 391-7800 |
| Rapid Prototype Co 4141 N Atlantic Blvd, Auburn Hills 48326 | (248) 391-6600 |
| Monroe Engineering Prod Inc 68 S Squirrel Rd, Auburn Hills 48326 | (248) 540-8585 |