| # | Name | Location | Applications |
|---|---|---|---|
| 1. | GRS Consulting, Inc. | 🇰🇷 Seoul, South Korea | 1 |
| 2. | GRS Guide System, Inc. | 🇺🇸 Beverly Hills, CA, United States | 5 |
| 3. | GRS KOREA INC. | 🇰🇷 Osan-si, Gyeonggi-do, South Korea | 1 |
| 4. | GRS Riflestocks AS | 🇳🇴 Hornindal, Norway | 2 |
| 5. | GRS VALTECH | 🇫🇷 Paris, France | 1 |
| 6. | GRST Energy Limited | 🇨🇳 Hong Kong, China | 2 |
| 7. | GRST International Limited | 🇨🇳 Hong Kong, China | 13 |
| 8. | GRST International Limited | 🇭🇰 Hong Kong, Hong Kong | 21 |
| 9. | GRST SINGAPORE PTE. LTD. | 🇸🇬 Singapore, Singapore | 7 |