| Hon Lam System Limited | | Live |
| ERA SYSTEM LIMITED | | Live |
| ACE SYSTEM LIMITED | | Live |
| SUN SYSTEM LIMITED | | Live |
| HTD SYSTEM LIMITED | | Live |
| 121 System Limited | | Live |
| iEx System Limited | | Live |
| Sun Tak System Limited | | Live |
| G3 System Limited | | Live |
| AC&T SYSTEM LIMITED | Private company limited by shares | Dissolved |
| ADVANCED SYSTEM LIMITED | Private company limited by shares | Live |
| AEDUPAC SYSTEM LIMITED | Private company limited by shares | Live |
| AEMPAC SYSTEM LIMITED | Private company limited by shares | Dissolved |
| AFFIRM SYSTEM LIMITED | Private company limited by shares | Dissolved |
| REGAL WORLD TRANSPORT SYSTEM (SEA & AIR) LIMITED | Private company limited by shares | Dissolved |
| Alpha-Round System Limited | | Live |
| Altima System Limited | | Live |
| APAC System Limited | | Live |
| AquaPro Purification System Limited | Private company limited by shares | Live |
| ARCON SYSTEM LIMITED | Private company limited by shares | Live |
| AROMATECH SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ARON DIGITAL SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| ARROW SYSTEM LIMITED | Private company limited by shares | Live |
| SYSTEM ARTISAN LIMITED | Private company limited by shares | Live |
| SYSTEM ASIA LIMITED | Private company limited by shares | Live |
| ASIA SYSTEM LIMITED | Private company limited by shares | Live |
| NEW SYSTEM (ASIA) LIMITED | Private company limited by shares | Live |
| ASIA SYSTEM ENTERPRISES LIMITED | Private company limited by shares | Live |
| ASIA INTERACTIVE SYSTEM LIMITED | Private company limited by shares | Dissolved |
| MITAC SYSTEM (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SYSTEM NETWORKS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| OPLANS SYSTEM ASIA LIMITED -THE- | Private company limited by shares | Live |
| ASIA PLASTIC SYSTEM LIMITED | Private company limited by shares | Dissolved |
| ASIA TRADE SYSTEM LIMITED | Private company limited by shares | Live |
| ASIAN SOFTWARE SYSTEM LIMITED | Private company limited by shares | Dissolved |
| ASIATECH DIGITAL SYSTEM LIMITED | Private company limited by shares | Live |
| ASTRONET SYSTEM LIMITED | Private company limited by shares | Live |
| AUTO ELECTRIC DRIVE SYSTEM HK CO., LIMITED | | Live |
| XI AU TE AUTOMATION SYSTEM LIMITED | Private company limited by shares | Dissolved |
| AVENIR SYSTEM LIMITED | Private company limited by shares | Dissolved |
| AWARD SYSTEM RESEARCH LIMITED | Private company limited by shares | Dissolved |
| BARTER EXCHANGE SYSTEM LIMITED | Private company limited by shares | Dissolved |
| Basic System Limited | | Live |
| BEAUTY SYSTEM LIMITED | Private company limited by shares | Dissolved |
| BEST SYSTEM LIMITED | Private company limited by shares | Dissolved |
| BEST SYSTEM LIMITED | Private company limited by shares | Dissolved |
| SYSTEM BEST LIMITED | Private company limited by shares | Dissolved |
| SYSTEM BEST LIMITED | Private company limited by shares | Live |
| BEST SYSTEM LIMITED | Private company limited by shares | Live |
| BEST SYSTEM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| BEST SYSTEM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| BEST SYSTEM INVESTMENT LIMITED | Private company limited by shares | Live |
| SYSTEM BEST PRECISION COMPANY LIMITED | Private company limited by shares | Dissolved |
| BEST SYSTEM SECRETARIES LIMITED | Private company limited by shares | Dissolved |
| BILLNET SYSTEM LIMITED | Private company limited by shares | Dissolved |
| BLOOMING SYSTEM LIMITED | Private company limited by shares | Live |
| BONDWELL SYSTEM LIMITED | Private company limited by shares | Dissolved |
| BOSS SYSTEM COMPANY LIMITED | Private company limited by shares | Live |
| System Brothers Limited | Private company limited by shares | Live |
| M & T BUSINESS SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| KP Business System Limited | 私人股份有限公司 | 仍註冊 |
| BUSINESS ASSOCIATE SYSTEM LIMITED | Private company limited by shares | Live |
| AUTOMATION BUSINESS SYSTEM COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW CENTURY BUSINESS SYSTEM LIMITED | Private company limited by shares | Live |
| CENTURY BUSINESS SYSTEM LIMITED | Private company limited by shares | Dissolved |
| EVERICH BUSINESS SYSTEM LIMITED | Private company limited by shares | Live |
| Ezway Business System Company Limited | | Live |
| Feasible Business System Limited | Private company limited by shares | Dissolved |
| GENERAL BUSINESS SYSTEM LIMITED | Private company limited by shares | Dissolved |
| SILVER BELL CALLING SYSTEM LIMITED | Private company limited by shares | Live |
| CANDY TOYS SYSTEM HK LIMITED | Private company limited by shares | Live |
| CAPITAL SYSTEM LIMITED | Private company limited by shares | Dissolved |
| CARETECH SYSTEM LIMITED | Private company limited by shares | Live |
| PO SAN CARPET SYSTEM LIMITED | Private company limited by shares | Live |
| CENTURY SYSTEM LIMITED | Private company limited by shares | Dissolved |
| SYSTEM CENTURY LIMITED | Private company limited by shares | Dissolved |
| CENTURY WAY SYSTEM LIMITED | Private company limited by shares | Live |
| CENTURY SYSTEM LIMITED | Private company limited by shares | Live |
| MIQ SUPPLY CHAIN SYSTEM LIMITED | Private company limited by shares | Dissolved |
| CHAMPION NETWORK SYSTEM LIMITED | Private company limited by shares | Dissolved |
| HK CHANGRUN AUTOMATION SYSTEM LIMITED | Private company limited by shares | Dissolved |
| CHARMING SYSTEM LIMITED | Private company limited by shares | Dissolved |
| SNIPER CHART SYSTEM LIMITED | Private company limited by shares | Dissolved |
| CHASE SYSTEM LIMITED | Private company limited by shares | Dissolved |
| Schwem Electronic (China) Automation System Limited | Private company limited by shares | Live |
| Chinaway System Limited | Private company limited by shares | Dissolved |
| Cimforce System (Asia) Company Limited | Private company limited by shares | Live |
| So Clean System Limited | Private company limited by shares | Live |
| Sky Cloud System Limited | Private company limited by shares | Live |
| Cloud-Tech System Limited | Private company limited by shares | Live |
| Cloudview Telecommunications System Limited | Private company limited by shares | Live |
| NINGBO KEEP BRAKE SYSTEM CO., LIMITED | Private company limited by shares | Live |
| DISCOVER DISPLAY SYSTEM (CHINA) CO., LIMITED | Private company limited by shares | Live |
| FRANCE LORAY IGNITION SYSTEM CO., LIMITED | Private company limited by shares | Live |
| NINGBO DRAGON SOLAR SYSTEM CO., LIMITED | Private company limited by shares | Dissolved |
| FRONTIER PRECISION SYSTEM CO., LIMITED | Private company limited by shares | Live |
| CONCORD SYSTEM LIMITED | Private company limited by shares | Live |
| SKYVIEW SYSTEM CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| JENSEN MANE SYSTEM CONTROL (HK) LIMITED | Private company limited by shares | Live |
| SYSTEM CRAFTS LIMITED | Private company limited by shares | Dissolved |