| Business | Phone |
| Graybar Electric Co 1811 High Grove Ln 115, Naperville 60540 | (630) 369-9383 |
| Phigenics Llc 10 W Martin Ave, Naperville 60540 | (630) 717-7546 |
| Reliance Wire & Cable 214 S Main St, Naperville 60540 | (630) 778-6700 |
| Windy City Baldor 1601 Frontenac Rd, Naperville 60563 | (630) 848-5100 |
| Dmc Security Svc Inc Naperville 60563 | (630) 388-6500 |
| J Ream Mfg Inc 31w280 Diehl Rd 101, Naperville 60563 | (630) 983-6945 |
| Lab Information Technology 505 Weston Ridge Dr, Naperville 60563 | (630) 579-0400 |
| Nikolai Voisovoi-Private Alarm 30w125 Claymore Ln, Naperville 60563 | (630) 305-7193 |
| Okonite Co 1350 Shore Rd B, Naperville 60563 | (630) 961-3100 |
| Pfeifer Industries Inc 2180 Corporate Ln 104, Naperville 60563 | (630) 596-9000 |
| Pro Con Systems Inc 530 Industrial Dr, Naperville 60563 | (630) 357-8540 |
| Sentry 360 Security 1280 Iroquois Ave 102, Naperville 60563 | (630) 355-3440 |
| Synergy Systems Inc 528 W 5th Ave, Naperville 60563 | (630) 778-1960 |
| T & D Products 1979 N Mill St 103, Naperville 60563 | (630) 305-9704 |
| Usi Electric Inc 1323 Bond St, Naperville 60563 | (630) 596-0216 |
| American Conec Corp 3580 Jeremy Ranch Ct, Naperville 60564 | (630) 820-8266 |
| Aaw Power Generator Inc 141 W Bailey Rd, Naperville 60565 | (630) 778-6462 |
| Greater Midwest Marketing 1783 S Washington St 106b, Naperville 60565 | (630) 416-8900 |
| Jcb Lighting 1745 Winola Ct, Naperville 60565 | (630) 983-0496 |