| # | Name | Location | Applications |
|---|---|---|---|
| 1. | H &H Science, LLC | 🇺🇸 Medina, OH, United States | 1 |
| 2. | H&H Skylight Fabricators, LLC | 🇺🇸 Sugarland, TX, United States | 1 |
| 3. | H.H. Scholz KG | 🇩🇪 Hamburg, Germany | 4 |
| 4. | H.H. STARCK SURFACE TECHNOLOGY AND CERAMIC POWDERS GMBH | 🇩🇪 Munich, Germany | 1 |
| 5. | HH Spinal LLC | 🇺🇸 Chattanooga, TN, United States | 3 |
| 6. | HHS Construction Inc. | 🇺🇸 Ontario, CA, United States | 1 |