| PIONEER UNION LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION PROPERTIES AGENCY LIMITED | Private company limited by shares | Live |
| UNION WEALTH HOLDINGS LIMITED | Private company limited by shares | Live |
| FAIR UNION LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION CENTURY LIMITED | Private company limited by shares | Dissolved |
| UNION POWER INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION BEST MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| HONOR UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION MARK INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION FREIGHT SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION EASE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION VIEW TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION SMART INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION WIDE TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WELL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION FIRST INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION (SINO-HK) TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| WHALE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| QI UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| BEST UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GARDEN HOLDINGS (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SINO UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NG CHOW UNION INT'L LIMITED | Private company limited by shares | Dissolved |
| STATE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION FAIR & TRADE COMPANY LIMITED | Private company limited by shares | Live |
| SINO UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| NICE UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GENIUS UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION MASS INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION VIEW ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION ADVERTISING PRODUCTION LIMITED | Private company limited by shares | Dissolved |
| HILL UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| LOYAL UNION LIMITED | Private company limited by shares | Live |
| UNION TRADE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CHEER UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SMART UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION GOLD LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION BEST ENGINEERING LIMITED | Private company limited by shares | Live |
| BROAD UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SMART (H.K.) LIMITED | Private company limited by shares | Live |
| UNION ENTERTAINMENT CLUB LIMITED | Private company limited by shares | Dissolved |
| EXTRA UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION LIMITED | Private company limited by shares | Live |
| TIME UNION LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION MART TRADING LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION BUILDING MATERIALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TELETECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| STATE UNION CHEMICALS CO LIMITED | Private company limited by shares | Dissolved |
| UNION REGAL LIMITED | Private company limited by shares | Live |
| UNION TALENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TALENT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| DOLLAR UNION LIMITED | Private company limited by shares | Live |
| UNION FUND DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ORIENT UNION FREIGHT SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION (CASHMERE) INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| CENTURY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| WISE UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION EAST LIMITED | Private company limited by shares | Dissolved |
| UNION REGENT INDUSTRIES LIMITED | Private company limited by shares | Live |
| GRAND UNION LIMITED | Private company limited by shares | Live |
| WELL UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION BRAVE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GRACE LIMITED | Private company limited by shares | Dissolved |
| UNION GUARD LIMITED | Private company limited by shares | Dissolved |
| UNION KINGDOM LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS TIMBER FACTORY LIMITED | Private company limited by shares | Live |
| UNION ECONOMIC & TRADING INVESTMENT CORPORATION LIMITED | Private company limited by shares | Live |
| UNION FINANCE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SMART UNION FAR EAST LIMITED | Private company limited by shares | Live |
| UNION WIN CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| WISE UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MAX UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| CRYSTAL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION ASIAN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION STAR INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| WISE UNION PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION WORLD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD (H.K.) LIMITED | Private company limited by shares | Live |
| UNION SMART HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SMART ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION TECH HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION STAR HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION STAR ENGINEERING LIMITED | Private company limited by shares | Live |