| Business | Phone |
| Gen Power 444 Randy Rd, Carol Stream 60188 | (630) 462-7770 |
| Capital Fire & Security Inc 780 W Army Trail Rd, Carol Stream 60188 | (630) 307-7382 |
| Eaton Corporation 191 E North Ave, Carol Stream 60188 | (630) 260-3400 |
| Precision Components Inc 279 E Lies Rd, Carol Stream 60188 | (630) 462-9110 |
| Sentry Security 350 Randy Rd 1, Carol Stream 60188 | (847) 398-3300 |
| Skyline Plastering Carol Stream 60188 | (630) 627-7711 |
| Viking Supply Net 640a Center Ave, Carol Stream 60188 | (630) 462-5860 |