| Business | Phone |
| Lonero Engineering Co Inc 2050 Stephenson Hwy, Troy 48083 | (248) 689-9120 |
| Lane Tool 1830 Brinston Dr, Troy 48083 | (248) 528-1606 |
| Walter Grinders Inc 1389 Wheaton Dr 300, Troy 48083 | (248) 528-2120 |
| Walter Grinders Of Michigan Troy 48085 | (248) 879-8454 |
| Alpha Controls 1850 Brinston Dr, Troy 48083 | (248) 528-6575 |
| Valiant International Inc 1511 E 14 Mile Rd, Troy 48083 | (248) 588-4510 |
| Atco Precision Tool Inc 780 W Maple Rd, Troy 48084 | (248) 362-2826 |
| Tri-Way Mfg 637 E Big Beaver Rd 105, Troy 48083 | (248) 457-4960 |
| Boro Tools Corp 2525 Industrial Row Dr, Troy 48084 | (248) 280-1600 |
| Precision Components 324 Robbins Dr, Troy 48083 | (248) 588-5650 |
| Heller Machine Tools 1225 Equity Dr, Troy 48084 | (248) 288-5000 |
| Carpathians Manufacturing 1260 Rankin Dr, Troy 48083 | (248) 733-9901 |