| UNION INTERNATIONAL MARITIME SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| EARNEST UNION LIMITED | Private company limited by shares | Dissolved |
| ELEGANT UNION LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION MACHINERY AND ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION VESSEL INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| STANDARD UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION GOLD INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION GOLD ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION GOLD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| YEE TAI UNION ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| GLOBAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KIO UNION (HK) CO. LIMITED | Private company limited by shares | Live |
| UNION SINO INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| PROSPER UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| FAST UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FAITH UNION CHINA LIMITED | Private company limited by shares | Dissolved |
| NICE UNION CHINA LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| SAFE UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| FAITH UNION FAR EAST LIMITED | Private company limited by shares | Dissolved |
| EAST UNION SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION FRIEND HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WIN UNION GARMENT LIMITED | Private company limited by shares | Dissolved |
| PEARL UNION UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION FAR EAST LIMITED | Private company limited by shares | Dissolved |
| UNION BROAD TRADING LIMITED | Private company limited by shares | Dissolved |
| CENTRE UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CENTRE UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GENIUS UNION LIMITED | Private company limited by shares | Dissolved |
| LEAD UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION WEALTH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION WEALTH LIMITED | Private company limited by shares | Dissolved |
| CENTRE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CENTRE UNION LIMITED | Private company limited by shares | Dissolved |
| PAN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| LONG UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL (HOLDINGS) COMPANY LIMITED | Private company limited by shares | Dissolved |
| ALLIED UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SINO UNION HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNION OF PEOPLE INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION BEST PRINTING LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION PATENT SERVICE CENTRE LIMITED | Private company limited by shares | Live |
| UNION BOOKS AND MAGAZINES DISTRIBUTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| MARVEL UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| WISE UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION STRONG INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION SOLTEK (HONG KONG) CO. LIMITED | Private company limited by shares | Dissolved |
| RICH UNION MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNION KING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HARVEST UNION LIMITED | Private company limited by shares | Dissolved |
| THREE UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION POWER SYSTEM LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION LUCK DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION BANCAIRE PRIVEE (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION FORWARD LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION DRILLING EQUIPMENT LIMITED | Private company limited by shares | Dissolved |
| OUTSTANDING UNION LIMITED | Private company limited by shares | Dissolved |
| BEST UNION ELECTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION BOND PIGMENTS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| EAST UNION RESOURCES LIMITED | Private company limited by shares | Dissolved |
| PURSE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION AVIATION LEASE LIMITED | Private company limited by shares | Live |
| UNION GAIN (ENTERPRISES) LIMITED | Private company limited by shares | Dissolved |
| UNION SAFETY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SEA LIMITED | Private company limited by shares | Dissolved |
| UNION BEST INTERNATIONAL (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| STAR UNION LIMITED | Private company limited by shares | Live |
| ASIA UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| INDOCHINE INSURANCE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION INSTRUMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| UNION FASHION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION LIMITED | Private company limited by shares | Dissolved |
| FREE UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION MANOR DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CHANNEL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION RANK LIMITED | Private company limited by shares | Dissolved |
| UNION CROWN TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION STAR TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION CHOICE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CHOICE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CHOICE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNION LANE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION WISE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION EAGLE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GOOD TECHNOLOGIES (ASIA PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| WELL UNION SYSTEMS LIMITED | Private company limited by shares | Live |
| UNION GOOD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FIT UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| MULTI UNION LIMITED | Private company limited by shares | Dissolved |
| UNION ORIGIN LIMITED | Private company limited by shares | Live |
| UNION PRIDE LIMITED | Private company limited by shares | Dissolved |