| # | Name | Location | Applications |
|---|---|---|---|
| 1. | ND DOWNHOLE TECHNOLOGY LTD. | 🇨🇦 Calgary, Canada | 1 |
| 2. | ndd Medizintechnik AG | 🇨🇠Zurich, Switzerland | 5 |
| 3. | ndd Medizintechnik AG | 🇨🇠Zurick, Switzerland | 1 |
| 4. | NDD, INC. | 🇰🇷 Gumi-si, Gyeongsangbuk-do, South Korea | 2 |
| 5. | NDD, Inc. | 🇰🇷 , South Korea | 1 |
| 6. | NDD, INC. | 🇰🇷 Gyeongsangbuk-Do, South Korea | 3 |