| Business | Phone |
| Advance Display Co 1657 N Kostner Ave, Chicago 60639 | (773) 235-0686 |
| Allied Metal Co 1839 S Lumber, Chicago 60616 | (312) 226-0799 |
| Alto Manufacturing Co 2850 N Ashland Ave, Chicago 60657 | (773) 935-7080 |
| American Wall Tie Co 2711 W Lake St, Chicago 60612 | (773) 533-1728 |
| Unique Checkout Systems 1350 S Kostner Ave, Chicago 60623 | (773) 522-4400 |
| Capital Engineering & Mfg Co 5837 S Ashland Ave, Chicago 60636 | (773) 737-8000 |
| Chicagoland Metal Fabricators 4549 W Belmont Ave, Chicago 60641 | (773) 328-8854 |
| Church & Chapel Metal Arts Inc 2616 W Grand Ave, Chicago 60612 | (773) 489-3700 |