| Business | Phone |
| Cannon Fire Protection 33341 Dequindre Rd B, Troy 48083 | (248) 577-3180 |
| Continental Products 850 Stephenson Hwy 600, Troy 48083 | (248) 583-0001 |
| Contour Metrological & Mfg Inc 488 Oliver Dr, Troy 48084 | (248) 273-1111 |
| Radian Tool & Engineering Inc 2626 Elliott Dr, Troy 48083 | (248) 588-3368 |
| Scale Mold Corp 1445 Rochester Rd, Troy 48083 | (248) 585-5080 |