| Business | Phone |
| Custom Filter 401 Hankes Ave, Aurora 60505 | (630) 906-2100 |
| Premier Environmental Tech Inc 2340 Lakeshore Ct, Aurora 60504 | (630) 978-1077 |
| Midwest Distributors 943 Johnston Dr, Aurora 60506 | (630) 896-1760 |
| J R Enterprises 602 Grand Ave, Aurora 60506 | (630) 897-8978 |