| # | Name | Location | Applications |
|---|---|---|---|
| 1. | H&H Eco Systems, Inc. | 🇺🇸 North Bonneville, WA, United States | 1 |
| 2. | H. Henriksen Mek. Verksted AS | 🇳🇴 Tønsberg, Norway | 1 |
| 3. | H. HENSELER AG | 🇨🇭 Kussnacht am Rigi, Switzerland | 1 |
| 4. | H. HENSELET AG | 🇨🇭 Kussnacht am Rigi, Switzerland | 1 |
| 5. | HHELI, LLC | 🇺🇸 Tulsa, OK, United States | 23 |