| The Proud Company | Pittsburgh | Pennsylvania | www.proudco.com |
| Thermal Devices, Inc. | Mt. Airy | Maryland | www.thermaldevices.com |
| Thorp Controls Automation Solutions | Shawnee Mission | Kansas | www.barr-thorp.com |
| Thorp Controls Automation Solutions | Omaha | Nebraska | www.barr-thorp.com |
| Thorp Controls Automation Solutions | Springfield | Missouri | www.barr-thorp.com |
| Thorp Controls Automation Solutions | Wichita | Kansas | WWW.BARR-THORP.COM |
| TMMI | Wheat Ridge | Colorado | www.tmmi.com |
| TORPEY DENVER INC | Broomfield | Colorado | www.torpeydenver.com |
| Total Automation Solutions | Alkhuwair | Masqat | www.tasind.com |
| Tri-Phase Automation | Pewaukee | Wisconsin | www.tri-phase.com |
| Triad Automation | Browns Summit | North Carolina | www.triadautomation.com/ |
| Triple H Specialty | Hazlehurst | Georgia | www.tripleh.com |
| United Electric Supply Company, Inc. | New Castle | Delaware | www.unitedelectric.com |
| Unlimited Electro Automation and Controls, Inc. | San Diego | California | www.unlimitedelectro.com |
| Wachendorff Prozesstechnik GMBH & Co. KG | Geisenheim | | www.wachendorff-prozesstechnik.de/emg |
| WALKER INDUSTRIAL | Newtown | Connecticut | www.walkerindustrial.com |
| Werner Electric | Pewaukee | Wisconsin | www.wernerelectric.com |
| WESCO - ANCHORAGE | Anchorage | Alaska | www.wesco.com |
| WESCO - KENNEWICK | Kennewick | Washington | www.wesco.com |
| WESCO DISTRIBUTION INC | Spokane | Washington | www.wesco.com |
| WESCO DISTRIBUTION INC | Portland | Oregon | www.wesco.com |
| Wesco Distribution Inc | Renton | Washington | www.wesco.com |
| WILLE ELECTRIC SUPPLY CO | Stockton | California | www.willeelectric.com |
| WILLE ELECTRIC SUPPLY CO | Modesto | California | www.willeelectric.com |
| Winkle Electric | Erie | Pennsylvania | www.winkle.com/productscategory.htm |
| Winkle Electric | Youngstown | Ohio | www.winkle.com/productscategory.htm |
| Withus Tech Co., Ltd | Anyang-si | Gyeonggi-do | www.wutech.co.kr |
| Zentron Technosys Pvt Ltd | Pune | | |
| Zesco Inc. | Recksville | Ohio | www.zescoinc.com |
| Zhejiang Huazhang Automation Equipment Co. Ltd. | Hangzhou | | www.huazhangautomation.com |
| Zicom Equipment Pte Ltd | Singapore | | www.zicomequipment.com.sg |
