| ADUBOS COMPANY LIMITED | Private company limited by shares | Dissolved |
| ADUCID HK LIMITED | Private company limited by shares | Live |
| ADUEY GROUP LIMITED | Private company limited by shares | Dissolved |
| Adulgency Limited | | Live |
| AD-ULTRA PHOTONICS CO., LIMITED | Private company limited by shares | Live |
| ADUM CONSULTING CO., LIMITED | Private company limited by shares | Live |
| ADUMAN LIMITED | Private company limited by shares | Dissolved |
| ADUMBRATE COMPANY LIMITED | Private company limited by shares | Dissolved |
| AdUnivers3 Limited | | Live |
| Adura Hong Kong Limited | Private company limited by shares | Live |