| CHINA QUADRI RESOURCE SERVICE CO., LIMITED | Private company limited by shares | Live |
| QUADRICH COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADRICS LIMITED | Private company limited by shares | Dissolved |
| QUADRIFAITH LIMITED | Private company limited by shares | Dissolved |
| QUADRIGA HK LIMITED | Private company limited by shares | Live |
| Quadrige Consulting Limited | Private company limited by shares | Live |
| QUADRIGULAE CO., LIMITED | Private company limited by shares | Dissolved |
| QUADRILLIANT COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| QUADRILLION CO. LIMITED | Private company limited by shares | Live |
| QUADRIPHARM COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADRIUM HONG KONG LIMITED | Private company limited by shares | Live |
| QUADRIUNION COMPANY LIMITED | Private company limited by shares | Live |
| QUADRIUNION FINANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADRIVIA LIMITED | Private company limited by shares | Live |
| Quadrivio Asia Pacific Limited | Private company limited by shares | Live |
| Quadrivium Limited | | Live |