| Business | Phone |
| A-1 Hearing Aid Ctr Inc 1627 W Belmont Ave, Chicago 60657 | (773) 477-1069 |
| Addto Inc 816 N Kostner Ave, Chicago 60651 | (773) 278-0294 |
| Americomp 2901 W Lawrence Ave, Chicago 60625 | (773) 583-1751 |
| Amrad 2901 W Lawrence Ave, Chicago 60625 | (773) 353-4003 |
| Best Foam Fabricators 9633 S Cottage Grove Ave, Chicago 60628 | (773) 721-1006 |
| Biomed Enterprises Ltd 8353 S Wabash Ave, Chicago 60619 | (773) 783-0100 |
| Bodine Electric Co 2500 W Bradley Pl, Chicago 60618 | (773) 478-3515 |
| C/Lect 2246 W Greenleaf Ave 2, Chicago 60645 | (312) 444-2978 |
| Desacc Inc 801 W Adams St, Chicago 60607 | (312) 930-5617 |
| Clinical Design Group Inc 2128 W Evergreen Ave # 1, Chicago 60622 | (773) 489-5721 |