| Company | Location |
|---|---|
| Hitachi High Technologies America, Inc. | Pleasanton, California, United States |
| Hitachi Zosen | Osaka, Japan |
| HL Planartechnik GmbH | Dortmund, Germany |
| HNP Mikrosysteme GmbH | Parchim, Germany |
| Hobson Consulting Ltd. | Shell Rock, Iowa, United States |
| Hochschule Offenburg | Offenburg, Germany |
| HOCKMEYER Equipment Corp. | Elizabeth City, NC 27909, North Carolina, United States |
| Hockmeyer Equipment Corp. | Houston, Texas, United States |
| Hodogaya Chemical, Inc. | White Plains, New Jersey, United States |
| Hoffman, Warnick & D’Alessandro LLC | Albany, New York, United States |
