| EMPIRE UNION LIMITED | Private company limited by shares | Live |
| UNION CHAMPION TRADING LIMITED | Private company limited by shares | Dissolved |
| FAIR UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| EASTERN UNION LIMITED | Private company limited by shares | Dissolved |
| OVERSEAS UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| FAMOUS UNION PROPERTY LIMITED | Private company limited by shares | Live |
| UNION FORTUNE (HK) SHIPPING CO. LIMITED | Private company limited by shares | Dissolved |
| UNION CHARM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| EXPRESS UNION TRAVEL LIMITED | Private company limited by shares | Dissolved |
| EXPRESS UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| VERYGOOD UNION INTERNATIONAL DEVELOPMENT (GROUP) LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA SHIPPING LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION LIMITED | Private company limited by shares | Live |
| UNION FAITH MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| GLORY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION BACE COMPANY LIMITED | Private company limited by shares | Live |
| UNION RESOURCES (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| PAUCO UNION TRADING (HONG KONG) LIMITED | Private company limited by shares | Live |
| CHAMPION UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION STONE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CHINA OVERSEAS WORLD UNION LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION MOTORS LIMITED | Private company limited by shares | Dissolved |
| UNION GAS ADVERTISING LIMITED -THE- | Private company limited by shares | Live |
| GAIETY UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| LUCKY UNION LIMITED | Private company limited by shares | Live |
| LUCKY UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION INSURANCE AGENCY LIMITED | Private company limited by shares | Live |
| UNION ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| HOME UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HOME UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| VAST UNION TRADING LIMITED | Private company limited by shares | Live |
| GRACE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HONG UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| JADE UNION SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION PRINTING COMPANY LIMITED | Private company limited by shares | Live |
| UNION SUCCESS ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| DOUBLE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION MARK LIMITED | Private company limited by shares | Dissolved |
| KING UNION LIMITED | Private company limited by shares | Live |
| LUCKY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HUNDRED UNION LIMITED | Private company limited by shares | Dissolved |
| UNION JOY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION WICK INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FOUND UNION LIMITED | Private company limited by shares | Dissolved |
| STAR UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| REGENT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION DEVELOPMENT SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TECHNOLOGY (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| FAITH UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SOURCE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION TECH ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION TECH (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| STRONG UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| HEROES UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ACE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HEROES UNION LIMITED | Private company limited by shares | Dissolved |
| WELL UNION CHINA LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION BASE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION BASE TRADING LIMITED | Private company limited by shares | Live |
| PACIFIC UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION ACE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION ORIENTAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| PEARL UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION LIMITED | Private company limited by shares | Dissolved |
| UNION ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| CENTRAL UNION LIMITED | Private company limited by shares | Dissolved |
| HONEST UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| STAR UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| STAR UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| PAN UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| FIRST UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| ORIENTAL UNION INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION MERCHANDISE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TOP UNION MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNION ENERGY HONGKONG INDUSTRIES LIMITED | Private company limited by shares | Live |
| FAR EAST UNION PROPERTY LIMITED | Private company limited by shares | Dissolved |
| TREASURE UNION LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITED UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CITY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FAITH UNION LIMITED | Private company limited by shares | Live |
| BROAD UNION PROPERTY LIMITED | Private company limited by shares | Dissolved |
| BEST UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION INTERNATIONAL ENTERPRISES CORPORATION LIMITED | Private company limited by shares | Dissolved |
| COMMERCIAL UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| METRO UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION STAR SHIPPING LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| HANG FUNG (UNION) INDUSTRIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION YIELD INVESTMENTS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION YIELD INVESTMENTS (GUANG ZHOU) LIMITED | Private company limited by shares | Live |
| UNION KEEN LIMITED | Private company limited by shares | Dissolved |
| SPARK UNION LIMITED | Private company limited by shares | Dissolved |