| Business | Phone |
| Accusourece Inc 6737 N Artesian Ave, Chicago 60645 | (773) 262-4625 |
| Alenco Tool Supply Co 4444 N Elston Ave, Chicago 60630 | (773) 725-5700 |
| Altman Machinery Co 4343 S Oakley Ave, Chicago 60609 | (773) 247-4343 |
| American Machine Tools Inc 5455 N Northwest Hwy, Chicago 60630 | (773) 334-5000 |
| Free Paging Inc 4463 W Lawrence Ave, Chicago 60630 | (773) 736-3100 |
| Chicago Machine 3801 S Archer Ave, Chicago 60632 | (773) 247-1111 |
| Dunmore Co 55 E Washington St, Chicago 60602 | (312) 782-7485 |