| AGT International |
| Aldridge Electric |
| Allan J. Coleman Co. |
| Auto Truck Group |
| Bill Jacobs Chevrolet Joliet |
| Budco |
| BW Technologies |
| Central Locating Service Ltd. |
| Chase Products |
| ComEd |
| CommScope |
| Consolidated Utility Service Inc. |
| Contech Construction Products |
| Contracting & Material Co. |
| Dearborn Engineers & Constructors |
| Expert Plumbing Service |
| Gas Technology Institute (GTI) |
| Godwin Pumps of America |
| Goldak Inc. |
| Henkels & McCoy, Inc. |
| Hurco Technologies |
| Illinois Truck & Equipment |
| Ingersoll Rand Equipment & Service |
| ITT Flygt Corporation |
| Krylon Products Group |
| Kundel Industries |
| LMK Enterprises |
| Martin Implement |
| Meade Electric Company |
| Metrotech Corporation |
| Nicor Gas |
| Nova Mobility Solutions |
| Payline West Inc. |
| Radiodetection |
| Schonstedt Instrument Company |
| SM&P Utility Resources, Inc. |
| Subsurface Instruments |
| Sunbelt Rentals Pump & Power |
| Super Products |
| Tallman Equipment |
| The Sewer Equipment Company of America |
| U.S. Saws |
| United Rentals Trench Safety |
| Vactor Manufacturing |
| Vanair |
| VMAC |
