| Company | Location |
|---|---|
| Hermsdorfer Institut fuer Technische Keramik eV | Hermsdorf, Germany |
| Herzan | Laguna Hills, California, United States |
| Heslin Rothenberg Farley & Mesiti PC | Albany, New York, United States |
| Hewitt Recruiters Inc. | Apopka, Florida, United States |
| Hielscher USA Inc. | Ringwood, New Jersey, United States |
| High Tech Materials | Longmont, Colorado, United States |
| HiperSem Inc. | Northglenn, Colorado, United States |
| Hiscock & Barclay, LLP | Westborough, Massachusetts, United States |
| Hitachi America | Tarrytown, New York, United States |
| Hitachi Chemical Research Center Inc. | Irvine, California, United States |
