| Business | Phone |
| Ken-Quest Ltd 425 S Chester Ave, Park Ridge 60068 | (847) 692-2509 |
| Hershey Productions 101 Summit Ave, Park Ridge 60068 | (847) 823-2300 |
| Midrange Softwear & Consulting Park Ridge 60068 | (847) 825-4515 |
| Millennium Consulting Svc Inc 2604 Dempster St 301, Park Ridge 60068 | (847) 768-9400 |
| Professional Financial Cnsltnt 444 N Northwest Hwy 195, Park Ridge 60068 | (847) 696-0077 |
| Wilkening & Co 1580 N Northwest Hwy 220, Park Ridge 60068 | (847) 823-5090 |
| Highcrest Mgmt Lift Station Park Ridge 60068 | (847) 696-0140 |
| Leonard Consulting 811 S Aldine Ave, Park Ridge 60068 | (847) 692-1911 |
| Thruput Inc 1429 Courtland Ave, Park Ridge 60068 | (847) 384-9508 |