| Business | Phone |
| Cannonball Mechanical Corp 195 W Ashland Ave, Aurora 60506 | (630) 896-4004 |
| Omni Pay Phone Svc Ltd 2174 Clementi Ln, Aurora 60503 | (630) 236-6321 |
| Kirwan Mechanical Svc Inc 23840 W Industrial Dr S, Aurora 60504 | (630) 978-0888 |
| Control Solutions Inc 2229 Diehl Rd, Aurora 60502 | (630) 806-7062 |
| Essex Electrical Contractors 2128 Grayhawk Dr, Aurora 60503 | (630) 836-7040 |
| R L West Electric 2093 Union Mill Dr, Aurora 60503 | (630) 375-9200 |
| Cipher Ltd 110 2nd St, Aurora 60506 | (630) 892-2345 |