| EXTREM. LIMITED | Private company limited by shares | Live |
| EXTREM ENERGY LIMITED | Private company limited by shares | Live |
| Extrem Seven Hong Kong Limited | Private company limited by shares | Live |
| EXTREMARK LIMITED | Private company limited by shares | Dissolved |
| EXTREME WIN LIMITED | Private company limited by shares | Dissolved |
| Extreme JJ HK Limited | Private company limited by shares | Live |
| EXTREME TOP LIMITED | Private company limited by shares | Live |
| Extreme Limited | Private company limited by shares | Live |
| EXTREME ACE LIMITED | Private company limited by shares | Live |
| GO EXTREME LIMITED | Private company limited by shares | Live |
| Ocean Extreme Group Limited | Private company limited by shares | Live |
| OCEAN EXTREME COMPANY LIMITED | Private company limited by shares | Live |
| ExtremeFufill Limited | | Live |
| Extremeix Limited | Private company limited by shares | Live |
| EXTREMELY BIG COMPANY LIMITED | Private company limited by shares | Dissolved |
| Extremely Limited | Private company limited by shares | Live |
| EXTREMELY ADS LIMITED | Private company limited by shares | Live |
| RUN EXTREMELY LIMITED | Private company limited by shares | Live |
| Extremely Car Beauty Limited | Private company limited by shares | Live |
| EXTREMELY CATERING BUSINESS LIMITED | Private company limited by shares | Live |
| GERMANY EXTREMELY TOUGHNESS LIMITED | Private company limited by shares | Live |
| EXTREMELY WEALTH LIMITED | Private company limited by shares | Live |
| Extremerate Limited | Private company limited by shares | Live |
| EXTREMEWELL LIMITED | Private company limited by shares | Dissolved |
| HONG KONG EXTREME-WIN COMPANY LIMITED | Private company limited by shares | Dissolved |
| EXTREMITY MEDIC SOLUTION (HONG KONG) LIMITED | Private company limited by shares | Live |
| Extrempay Limited | Private company limited by shares | Live |