| # | Name | Location | Applications |
|---|---|---|---|
| 1. | G.C. TECHNOLOGY | 🇫🇷 Aix en Provence, France | 1 |
| 2. | G.C. TECHNOLOGY | 🇫🇷 Aix En, France | 1 |
| 3. | GC Technology Limited | Turks and Caicos Islands | 1 |
| 4. | GC TOKYO CO., LTD. | 🇯🇵 Tokyo, Japan | 1 |
| 5. | GCT Gas-Cell-Tec AG | 🇨🇭 Herzogenbuchsee, Switzerland | 1 |
| 6. | GCT Research, Inc. | 🇰🇷 Dongjak-gu, Seoul, South Korea | 1 |
| 7. | GCT Research, Inc. | 🇰🇷 Shindaebang Dong, Dongjak Gu, Seoul, South Korea | 1 |
| 8. | GCT Research, Inc. | 🇰🇷 Seoul, South Korea | 5 |
| 9. | GCT Semiconductor, Inc. | 🇺🇸 San Jose, CA, United States | 32 |