| # | Name | Location | Applications |
|---|---|---|---|
| 1. | KT Tech, Inc. | 🇰🇷 Seongnam-si, South Korea | 1 |
| 2. | KT Tech, Inc. | 🇰🇷 Gyeonggi-do, South Korea | 5 |
| 3. | KT Tech, Inc. | 🇰🇷 Seongnam-si, Gyeonggi-do, South Korea | 1 |
| 4. | KT-Tech, Inc. | 🇺🇸 Bowie, MD, United States | 3 |
| 5. | KTT Co., Ltd. | 🇯🇵 Toyama-ken, Japan | 1 |
| 6. | KÜTTNER HOLDING GMBH & CO. KG | 🇩🇪 Essen, Germany | 1 |