| Business | Phone |
| American Electronic Assemblies 6740 N Edgebrook Ter, Chicago 60646 | (773) 467-8661 |
| Assemblers Inc 5490 W Roosevelt Rd, Chicago 60644 | (773) 378-3000 |
| Carc Industries 10444 S Kedzie Ave, Chicago 60655 | (773) 346-9885 |
| Carolina Business Furniture 222 Merchandise Mart, Chicago 60654 | (312) 828-0588 |
| Donald & Sons Inc 2601 S Halsted St, Chicago 60608 | (312) 225-4101 |
| Comforto Inc 222 Merchandise Mart, Chicago 60654 | (312) 822-0012 |
| Continental Assembly Inc 4317 N Ravenswood Ave, Chicago 60613 | (773) 472-8004 |
| Crest Metalcraft Inc 2900 E 95th St, Chicago 60617 | (773) 978-0950 |