| SECURITY SOLUTIONS LIMITED | Private company limited by shares | Live |
| ETG SECURITY SOLUTIONS LIMITED | Private company limited by shares | Live |
| JEI Security Solutions Limited | Private company limited by shares | Live |
| TW Security Solutions Limited | | Live |
| SECURITY SOLUTIONS ASIA LIMITED | Private company limited by shares | Dissolved |
| BIOPAY SECURITY SOLUTIONS COMPANY LIMITED | Private company limited by shares | Live |
| SECURITY SOLUTIONS CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| ERVI SECURITY SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| INTERNET SECURITY SOLUTIONS LIMITED | Private company limited by shares | Live |
| SPOTLIGHT SECURITY COMPANY LIMITED | Private company limited by shares | Live |
| S.T. SECURITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| STANDARD SECURITY LIMITED | Private company limited by shares | Dissolved |
| SUNGUARD SECURITY CO. LIMITED | Private company limited by shares | Live |
| SUNPOWER SECURITY COMPANY LIMITED | Private company limited by shares | Live |
| SUNSHINE SECURITY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SUPER SECURITY LIMITED | Private company limited by shares | Live |
| Surplus Security Limited | | Live |
| Security Surveillance Limited | Private company limited by shares | Live |
| SYON SECURITY LIMITED | Private company limited by shares | Live |
| ASC NIS SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| GNT SECURITY SYSTEM LIMITED | Private company limited by shares | Dissolved |
| J & S SECURITY SYSTEM COMPANY LIMITED | Private company limited by shares | Live |
| DC SECURITY SYSTEM LIMITED | Private company limited by shares | Dissolved |
| JP SECURITY SYSTEM COMPANY LIMITED | Private company limited by shares | Live |
| JCT SECURITY SYSTEM LIMITED | Private company limited by shares | Dissolved |
| 1 Top Security System Limited | Private company limited by shares | Live |
| COP SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| BOS SECURITY SYSTEM CO. LIMITED | Private company limited by shares | Live |
| YH Security System Limited | | Live |
| ASIA SECURITY SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASC NIS (ASIA) SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| EASY SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| TIN LIK SECURITY SYSTEM (ENGINEERING) LIMITED | Private company limited by shares | Live |
| INTELLITECH (SECURITY SYSTEM) LIMITED | Private company limited by shares | Live |
| NIXON SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| PACIFIC SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| PECO SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| POLY SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| PROTECT-SYS Security System Limited | Private company limited by shares | Dissolved |
| SYSTEM SECURITY SOLUTIONS LIMITED | Private company limited by shares | Live |
| SUCCESS SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| Yuta Security System Limited | | Live |
| SYSTEMIC SECURITY SERVICE LIMITED | Private company limited by shares | Dissolved |
| SECURITY SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| TOP WIN SECURITY SYSTEMS LIMITED | Private company limited by shares | Live |
| A & D SECURITY SYSTEMS LIMITED | Private company limited by shares | Live |
| DCS SECURITY SYSTEMS LIMITED | Private company limited by shares | Live |
| VA Security Systems Co. Limited | Private company limited by shares | Live |
| DOCTOR A SECURITY SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| eBizAnywhere Security Systems Limited | Private company limited by shares | Dissolved |
| KONWEST SECURITY SYSTEMS LIMITED | Private company limited by shares | Live |
| KA MING SECURITY SYSTEMS COMPANY LIMITED | Private company limited by shares | Live |
| SCANTECH SECURITY SYSTEMS LIMITED | Private company limited by shares | Live |
| SOUNDIC SECURITY SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| UNIFORCE SECURITY SYSTEMS LIMITED | Private company limited by shares | Live |
| ON TARGET Security Solutions Limited | Private company limited by shares | Live |
| Taser Security H.K Company Limited | Private company limited by shares | Live |
| SMT Security Tech Limited | Private company limited by shares | Live |
| DIGITAL SECURITY TECH LIMITED | Private company limited by shares | Dissolved |
| Pacific Security Technologies Limited | Private company limited by shares | Live |
| PANDA SECURITY TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| RYAN SECURITY TECHNOLOGIES, LIMITED | Private company limited by shares | Live |
| SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| ASA SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Security Technology Limited | Private company limited by shares | Live |
| STL SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ASP Security & Technology Limited | Private company limited by shares | Live |
| X.Y Security Technology Limited | Private company limited by shares | Live |
| WIN SUN SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ASIA SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ADVANCED SECURITY TECHNOLOGY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| CREATIVE SECURITY TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 11-Mar-2010 |
| CREATIVE TECHNOLOGY SECURITY LIMITED | Private company limited by shares | Dissolved |
| WeRHere Cyber Security & Technology Limited | | Live |
| Security Technology Engineering Company LIMITED | Private company limited by shares | Live |
| GAMMON SECURITY & TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Yatu Security & Technology Holding Limited | Private company limited by shares | Live |
| Internet Security Technology Company Limited | Private company limited by shares | Live |
| Jincheng Digital Security Technology Limited | | Live |
| MIRACLE SECURITY TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| 3D NETWORKS SECURITY AND TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| NINGBO TOLION SECURITY TECHNOLOGY COMPANY LIMITED | | Live |
| RC-ZHONGDUN SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SECUREPRO TECHNOLOGY SECURITY SYSTEM LIMITED | Private company limited by shares | Live |
| XJB SMART SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Tuobang Security Technology Limited | Private company limited by shares | Live |
| VIEW ONE SECURITY TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Wingspan Network Security Technology Limited | | Live |
| TELECOMMUNICATIONS & SECURITY SYSTEMS LIMITED | Private company limited by shares | Live |
| TIMES SECURITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| TONWELL SECURITY LIMITED | Private company limited by shares | Live |
| TOTAL SECURITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOTAL SECURITY CONSULTING LIMITED | Private company limited by shares | Live |
| Total Security Protection (APAC) Limited | | Live |
| SECURITY TRADING COMPANY LIMITED | Private company limited by shares | Live |
| KENKO SECURITY TRADING LIMITED | Private company limited by shares | Live |
| SECURITY TRAINING LIMITED | Private company limited by shares | Dissolved |
| 360 Security Training Limited | Private company limited by shares | Live |
| Cyber Security Training Company Limited | Private company limited by shares | Live |
| Security Training Protocols Limited | Private company limited by shares | Live |