| Business | Phone |
| Kaiser Cams Inc 32340 Edward Ave, Madison Heights 48071 | (248) 585-3848 |
| Ultimate Precision Inc 29370 Stephenson Hwy, Madison Heights 48071 | (248) 543-7670 |
| Triad Manufacturing Co 32020 Edward Ave, Madison Heights 48071 | (248) 583-9636 |
| Trig Tool Inc 1143 E 10 Mile Rd, Madison Heights 48071 | (248) 543-2550 |
| Steinard Prototype Inc 25835 John R Rd, Madison Heights 48071 | (248) 546-9499 |
| S & L Machine Products Inc 1800 E 11 Mile Rd, Madison Heights 48071 | (248) 543-6633 |
| Pro-Tooling Co 672 Ajax Dr, Madison Heights 48071 | (248) 583-4716 |
| Pioneer Machine & Technology 1167 E 10 Mile Rd, Madison Heights 48071 | (248) 546-4451 |
| Preferred Tool & Machine 595 E 10 Mile Rd, Madison Heights 48071 | (248) 399-6919 |
| Gage Pattern & Model Inc 32070 Townley St, Madison Heights 48071 | (248) 585-2476 |
| Mil-Kip Machine Tool Inc 760 Ajax Dr, Madison Heights 48071 | (248) 585-3555 |
| Highland Manufacturing Inc 339 E Whitcomb Ave, Madison Heights 48071 | (248) 585-8040 |
| Aqua Tool 32360 Edward Ave, Madison Heights 48071 | (248) 307-1984 |