| 1 | Swift Sensors | | USA |
| 2 | Acoustic Emission Consulting Inc. | | USA |
| 3 | Rothenbuhler Engineering | | USA |
| 4 | Piezo Systems Inc. | | USA |
| 5 | Massa Products Corp. | | USA |
| 6 | Ultra Electronics USSI | | USA |
| 7 | Silicon Audio | | USA |
| 8 | Casella CEL Inc. | | USA |
| 9 | B.E.G. Controls | | USA |
| 10 | DKL International Inc. | | USA |
| 11 | Dunegan Engineering Company Incorporated | | USA |
| 12 | Vesper | | USA |
| 13 | General Mems Corporation | | USA |
| 14 | Physical Acoustics Ltd. | | USA |
| 15 | Scintec Corporation | | USA |
| 16 | Adelos Inc. | | USA |
| 17 | Underwater Systems | | USA |
| 18 | Micro Optics Technologies Fibersound | | USA |
| 19 | AIRMAR Technology Corporation | | USA |
| 20 | IFM Efector Inc. | | USA |
| 21 | Siemens Process Instrumentation | | USA |
| 22 | Dytran Instruments Inc. | | USA |
| 23 | Process Technologies Group Inc. | | USA |
| 24 | ISG Devices | | USA |
| 25 | Telemecanique Sensors | | USA |
| 26 | Columbia Research Laboratories Inc. | | USA |
| 27 | Automation Products Group Inc. (APG SENSORS) | | USA |
| 28 | Siemens Corporation | | USA |
| 29 | Savox Communications Ltd. | | USA |
| 30 | Piezo Technologies | | USA |
| 31 | BeStar Technologies Inc. | | USA |
| 32 | Ultra Electronics Maritime Systems | | USA |
| 33 | Polytec Inc. | | USA |
| 34 | Aco Pacific Inc. | | USA |
| 35 | Campbell Scientific Inc. | | USA |
| 36 | Nobska | | USA |
| 37 | Sensotech Inc. | | USA |
| 38 | Sylvania | | USA |
| 39 | Kistler Instrument Corp. | | USA |
| 40 | Sparton Navigation and Exploration | | USA |
| 41 | Eastech Flow Controls | | USA |
| 42 | Hubbell Lighting | | USA |
| 43 | Sequoia Scientific Inc. | | USA |
| 44 | Senix Corporation | | USA |
