| Business | Phone |
| Apex Broaching Systems 22800 Hoover Rd, Warren 48089 | (586) 758-2626 |
| Crudo Equipment & Leasing 28401 Van Dyke Ave, Warren 48093 | (586) 558-6998 |
| Master Boring Co 25215 Hoover Rd, Warren 48089 | (586) 754-2865 |
| Lyte Poles Inc 23171 Groesbeck Hwy, Warren 48089 | (586) 771-4610 |