(Updated October 3, 2011)
| ACI/Boland, Inc. | Neocase |
| All Systems | P1 Group, Inc. |
| Amico Corporation | Pall Medical |
| Becker Pumps Corp. | Poole Fire Protection, Inc. |
| BHC RHODES | Premium Mech. & Automation |
| Blu SKY Restoration | Progressive Electronics |
| Burns & McDonnell | Purdum Construction |
| Cloutman and Stingley, In.c | reNUEL Fuel, llc |
| Desco Coatings, Inc. | Siemens Industry |
| Electrical Corporation of America | Sika Corporation |
| Fire Dynamics, Div of Henderson Engineers | Sika Sarnafil |
| Foley Company | Smithereen Pest Mgmt |
| GBA | Spaces Inc. |
| Graybar | Specified Technologies |
| Harmon Construction, Inc. | SSRCx |
| HEPACART / TED Systems | Stericycle |
| Hilti | Summers Associates Inc. |
| HMN Architects, Inc. | Sys-Tek |
| Integrated Consulting Engineers | TeleHealth Services |
| JE Dunn Construction | Thyssenkrupp Elevators |
| KBS Constructors | Trane |
| Mark One Elec. Co. | Turner Construction |
| McCown Gordon Construction | U.S. Engineering Company |
| MMC Contractors | United Excel |
| MTS Contracting | Z-Band Inc. |
| Nabholz Construction Services |
