| Business | Phone |
| Kapos Machine Control 330 E Maple Rd, Troy 48083 | (248) 616-0390 |
| Aarell Co 1985 W Big Beaver Rd, Troy 48084 | (248) 649-3810 |
| Young Supply Co 2237 Elliott Dr, Troy 48083 | (248) 577-0442 |
| Telemecanique Ind 1960 Research Dr, Troy 48083 | (248) 680-0360 |
| T R Electronic 1890 Crooks Rd # 200, Troy 48084 | (248) 244-2280 |
| Owen Engineering Inc 1238 Rankin Dr B, Troy 48083 | (248) 733-9777 |
| Fidia 1397 Piedmont Dr 800, Troy 48083 | (248) 680-0700 |
| T R Electronic 200 E Big Beaver Rd, Troy 48083 | (248) 244-2280 |
| Siemens Energy & Automation 777 Chicago Rd, Troy 48083 | (248) 307-3471 |