| ADTEC DIGITAL LIMITED | Private company limited by shares | Dissolved |
| AD-TECH LIMITED | Private company limited by shares | Dissolved |
| AdTech Innovation Limited | Private company limited by shares | Live |
| ADTECH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| Ad-Tech & AV Solution Limited | Private company limited by shares | Dissolved |
| Adtech Solutions Limited | | Live |
| ADTECH TIME LIMITED | Private company limited by shares | Dissolved |
| AD-TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ADTechnology(H.K.) LIMITED | Private company limited by shares | Live |