| Business | Phone |
| Abc Machining & Fabricating 6737 E 8 Mile Rd, Warren 48091 | (586) 758-0680 |
| Amber Manufacturing 23300 Amber Ave, Warren 48089 | (586) 756-0350 |
| Bilco Tool Corp 30076 Dequindre Rd, Warren 48092 | (586) 574-9300 |
| Dexter Roll Form Co 30150 Ryan Rd, Warren 48092 | (586) 573-6930 |
| Futuramic Tool & Engineering 24680 Gibson Dr, Warren 48089 | (586) 758-2200 |
| Gch Machinery 13301 E 8 Mile Rd, Warren 48089 | (586) 771-1500 |
| Harper Machine Tool Inc 21410 Ryan Rd, Warren 48091 | (586) 756-0140 |