| RATIO COMPANY LIMITED | Private company limited by shares | Dissolved |
| HIGH-TECH ENERGY RATIO (HK) LIMITED | Private company limited by shares | Live |
| First Ratio Limited | Private company limited by shares | Live |
| PENULTIMA RATIO REGUM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| RATIO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MARK RATIO LIMITED | Private company limited by shares | Dissolved |
| RATIO RESEARCH COMPANY LIMITED | Private company limited by shares | Live |
| RATION LIMITED | Private company limited by shares | Dissolved |
| RATION LIMITED | Private company limited by shares | Dissolved |
| NEW RATION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RATION GOAL LIMITED | Private company limited by shares | Live |
| RATION INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| RATIONAL LIMITED | Private company limited by shares | Dissolved |
| RATIONAL LIMITED | Private company limited by shares | Live |
| FAST RATIONAL LIMITED | Private company limited by shares | Live |
| RATIONALIS HK LIMITED | Private company limited by shares | Live |
| EXTRA RATIONS LIMITED | Private company limited by shares | Dissolved |