| 1 | High Frequency Technology Co. Inc. | | USA |
| 2 | Relay Service Co. | | USA |
| 3 | Mercury Displacement Industries Inc. (MDI Inc.) | | USA |
| 4 | Kilovac Products From CII Technologies | | USA |
| 5 | North Star High Voltage | | USA |
| 6 | General Atomics | | USA |
| 7 | Aleph America Corporation | | USA |
| 8 | Relays-Unlimited | | USA |
| 9 | Cytec Corp. | | USA |
| 10 | CII Technologies | | USA |
| 11 | Ross Engineering Corp. | | USA |
| 12 | Devar Inc. | | USA |
| 13 | Yaskawa America Inc. – Drives & Motion Division | | USA |
| 14 | Struthers-Dunn Inc. | | USA |
| 15 | SE Relays | | USA |
| 16 | Watlow | | USA |
| 17 | Jaidinger Manufacturing Co. Inc. | | USA |
| 18 | Gripping Power Inc. | | USA |
| 19 | KG Technologies Inc. | | USA |
| 20 | Macromatic Industrial Controls Inc. | | USA |
| 21 | TE Connectivity | | USA |
| 22 | Sylvania | | USA |
| 23 | PICS INC | | USA |
| 24 | Comus International | | USA |
| 25 | ABB | | USA |
| 26 | Esterline Power Systems | | USA |
| 27 | Bender Inc. | | USA |
| 28 | Siemens Energy Inc. | | USA |
| 29 | HBcontrols Inc. | | USA |
| 30 | Anacon Power & Controls | | USA |
| 31 | HECON/Hengstler | | USA |
| 32 | Celduc Inc. | | USA |
| 33 | Schneider Electric | | USA |
| 34 | Firgelli Automations | | USA |
| 35 | R-K Electronics Inc. | | USA |
