| # | Name | Location | Applications |
|---|---|---|---|
| 1. | D.T. Circuit Technology Co., Ltd. | 🇯🇵 Tokyo, Japan | 3 |
| 2. | DTC Communications Inc. | 🇺🇸 Pinellas Park, FL, United States | 1 |
| 3. | DTC International, Inc. | 🇺🇸 Houston, TX, United States | 4 |
| 4. | DTC Products | 🇺🇸 St. Charles, IL, United States | 1 |
| 5. | DTC Products, Inc. | 🇺🇸 St. Charles, IL, United States | 3 |
| 6. | DTC-Healthkare Inc. | 🇹🇼 Taipei, Taiwan | 1 |
| 7. | DTCC DIGITAL (US) INC. | 🇺🇸 JERSEY CITY, NJ, United States | 26 |
| 8. | DTCON A/S | 🇩🇰 , Denmark | 1 |