| QUADRA LIMITED | Private company limited by shares | Dissolved |
| QUADRA HK LIMITED | Private company limited by shares | Dissolved |
| CASA QUADRA LIMITED | Private company limited by shares | Live |
| QUADRA DESIGN COMMUNICATION LIMITED | Private company limited by shares | Live |
| QUADRA DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| QUADRA ENGINEERING DESIGNS LIMITED | Private company limited by shares | Live |
| QUADRA (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| QUADRA TECHNIC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| QUADRA INVESTMENT LIMITED | Private company limited by shares | Live |
| QUADRA STRAT TRADE SERVICES LIMITED | Private company limited by shares | Live |
| QUADRA TECHNIC I C S LIMITED | Private company limited by shares | Live |
| QuadraByte Technology Limited | Private company limited by shares | Dissolved |
| QUADRACAST LIMITED | Private company limited by shares | Dissolved |
| QUADRAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| QUADRALINK COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADRAN LIMITED | Private company limited by shares | Live |
| QUADRANET LIMITED | Private company limited by shares | Live |
| QUADRANGLE LIMITED | Private company limited by shares | Dissolved |
| Quadrangle Limited | Private company limited by shares | Live |
| Quadrangle HK Limited | Private company limited by shares | Live |
| Quadrangle Asia Limited | Private company limited by shares | Live |
| Quadrangle Corporation Limited | Private company limited by shares | Live |
| QUADRANGLE GROUP ASIA LIMITED | Private company limited by shares | Dissolved |
| QUADRANT LIMITED | Private company limited by shares | Dissolved |
| QUADRANT LIMITED | Private company limited by shares | Dissolved |
| New Quadrant Limited | Private company limited by shares | Dissolved |
| New Quadrant Limited | Private company limited by shares | Live |
| QUADRANT AG LIMITED | Private company limited by shares | Live |
| Quadrant Company Limited | Private company limited by shares | Live |
| QUADRANT ASIA LIMITED | Private company limited by shares | Dissolved |
| HANGZHOU QUADRANT TECHNOLOGY CO., LIMITED | | Live |
| QUADRANT COMPONENTS INC LIMITED | Private company limited by shares | Live |
| QUADRANT LINK CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| Quadrant Consulting Limited | Private company limited by shares | Dissolved |
| Quadrant Dental Lab Limited | Private company limited by shares | Live |
| DIFFERENT QUADRANT LIMITED | Private company limited by shares | Live |
| QUADRANT ELECTRIC LIMITED | Private company limited by shares | Dissolved |
| QUADRANT (H.K.) LIMITED | Private company limited by shares | Dissolved |
| QUADRANT ENGINEERING (H.K.) LIMITED | Private company limited by shares | Live |
| LM First Quadrant Holding Limited | | Live |
| Quadrant Link Holdings Limited | Private company limited by shares | Dissolved |
| HONGKONG QUADRANT DESIGN CONSULTING LIMITED | | Live |
| QUADRANT IMAGE ADVERTISING COMPANY LIMITED | Private company limited by shares | Dissolved |
| QUADRANT INTERNATIONAL DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| QUADRANT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Quadrant Investment Management Co., Limited | | Live |
| QUADRANT EPP ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| QUADRANT GLOBAL SEARCH LIMITED | Private company limited by shares | Dissolved |
| QUADRANT SERVICES LIMITED | Private company limited by shares | Live |
| QUADRANT COMPUTER SERVICES LIMITED | Private company limited by shares | Dissolved |
| QUADRANT SHIPPING LIMITED | Private company limited by shares | Live |
| QUADRANT SYSTEMS LIMITED | Private company limited by shares | Live |
| Quadrant IV Technology Limited | | Live |
| HK QUADRANT TECHNOLOGY LIMITED | | Live |
| QUADRANT TRADING LIMITED | Private company limited by shares | Dissolved |
| United Quadrant Solution Limited | Private company limited by shares | Live |
| QUADRANT WEALTH LIMITED | Private company limited by shares | Live |
| Quadrant Link Worldwide Limited | Private company limited by shares | Dissolved |
| QUADRA-SCAN LIMITED | Private company limited by shares | Dissolved |
| Quadrat (Hong Kong) Company Limited | Private company limited by shares | Live |
| QUADRATA INVESTMENTS LIMITED | Private company limited by shares | Live |
| QuadRate Limited | Private company limited by shares | Live |
| QUADRATIC CAPITAL LIMITED | Private company limited by shares | Live |
| HK THE QUADRATIC DRESS LIMITED | Private company limited by shares | Live |
| QUADRATIC INVESTMENT LIMITED | Private company limited by shares | Live |
| Quadratic Success Limited | Private company limited by shares | Live |
| QUADRATRON LIMITED | Private company limited by shares | Dissolved |
| QUADRATUS LIMITED | Private company limited by shares | Dissolved |