| Business | Phone |
| Windsor Holding Corp 1304 S Indiana Ave, Chicago 60605 | (312) 394-7300 |
| Morris Kurtzon Inc 1420 S Talman Ave, Chicago 60608 | (773) 277-2121 |
| New Metal Craft Inc 812 N Wells St, Chicago 60610 | (312) 787-6991 |
| Stiffel Co 525 W Superior St, Chicago 60610 | (312) 664-3652 |
| Marcsmen 2615 W Barry Ave, Chicago 60618 | (773) 267-5807 |
| Jaidinger/Percision Assembly C 1921 W Hubbard St, Chicago 60622 | (773) 763-7373 |
| New Metal Craft Inc 1308 N Elston Ave, Chicago 60622 | (773) 486-2392 |