| Company | Location |
|---|---|
| Amgen | Thousand Oaks, California, United States |
| Amkor Technology Inc. | West Chester, Pennsylvania, United States |
| AMO GmbH | Aachen, Germany |
| Amptek Inc. | Bedford, Massachusetts, United States |
| AMR Technologies Inc. | Toronto, Ontario, Canada |
| Amri Inc. | Houston, Texas, United States |
| AMTEC GmbH | Chemnitz, Germany |
| Amuneal Manufacturing Corp. | Philadelphia, Pennsylvania, United States |
| Anaheim Center for New Energy Technology (AC-NET) | Anaheim, California, United States |
| Analatom Inc. | Sunnyvale, California, United States |
