| Company | Location |
|---|---|
| Ultratech Inc. | San Jose, California, United States |
| ULVAC Technologies Inc. | Methuen, Massachusetts, United States |
| Umachines Inc. | Altadena, California, United States |
| umedik Inc. | Toronto, Ontario, Canada |
| Umicore Semiconductor Processing | Raleigh, North Carolina, United States |
| Unaxis Semiconductors | St. Petersburg, Florida, United States |
| Uni-Technologies Sdn Bhd | Skudai, Johor, Malaysia |
| Union College - Engineering | Schenectady, New York, United States |
| Unipo GmbH | Michelstadt, Germany |
| Unisun | Newbury Park, California, United States |
