| Business | Phone |
| Fujitsu Business Communication 650 W Grand Ave 207, Elmhurst 60126 | (630) 241-3600 |
| Ikegami Electronics Usa Inc 747 N Church Rd C1, Elmhurst 60126 | (630) 834-9774 |
| John David Productions Ltd 730 N York St, Elmhurst 60126 | (630) 833-8988 |
| Krescom Inc 174 E Crestview Ave, Elmhurst 60126 | (630) 833-7759 |
| Luxcom Inc 340 W Butterfield Rd 4b, Elmhurst 60126 | (630) 941-8558 |
| Scott Associates Inc 445 May St, Elmhurst 60126 | (630) 279-5681 |
| Stromberg Time & Attendance 135 N Addison Ave, Elmhurst 60126 | (630) 279-1024 |
| Universal Home Entertainment Elmhurst 60126 | (630) 253-2001 |