| ARTPACK UNION CO., LIMITED | Private company limited by shares | Live |
| BEST UNION INT'L HOLDINGS (HK) LIMITED | Private company limited by shares | Live |
| WORLD UNION OVERSEAS LIMITED | Private company limited by shares | Dissolved |
| Three Union Technology (Hong Kong) Limited | Private company limited by shares | Live |
| ASIA TOURISM UNION GROUP LIMITED | Private company limited by shares | Live |
| China Chief Editor Union LIMITED | Private company limited by shares | Live |
| HUANYU UNION GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| UNION SYSTEM DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| FORTRESS UNION LIMITED | Private company limited by shares | Live |
| SUPER UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| INTERNATIONAL CHINESE BUSINESS UNION LIMITED | Private company limited by shares | Dissolved |
| GUANGTAI UNION INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| JOY UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| TENGZHOU UNION INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| ACE UNION LIMITED | Private company limited by shares | Dissolved |
| Wave Union International Limited | Private company limited by shares | Live |
| UNION GROUP SHARES INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| SUPER UNION INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Live |
| H.K.C. UNION GROUP LIMITED | Private company limited by shares | Live |
| UNION INVESTMENT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| BIG UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION WEALTH INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Live |
| HONGKONG UNION STAR CHEMICAL LIMITED | Private company limited by shares | Live |
| UNION WEALTH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION SKY ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION SUCCESS ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION SINO INVESTMENT LIMITED | Private company limited by shares | Live |
| Union Int'L Business Co., Limited | Private company limited by shares | Live |
| RICH UNION DEVELOP LIMITED | Private company limited by shares | Live |
| UNION CHOICE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION CHOICE INVESTMENT LIMITED | Private company limited by shares | Live |
| BRAIN UNION INFORMATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HongKong Isan Union International Co., Limited | Private company limited by shares | Live |
| UNION WING INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| China Financial Union Holdings Limited | Private company limited by shares | Dissolved |
| MEGA UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| UNION LEGEND ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION CHANNEL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION RICH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MEDICINAL INT'L INDUSTRIAL UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNION WELL SHIPPING LIMITED | Private company limited by shares | Live |
| PARK UNION LIMITED | Private company limited by shares | Live |
| WISDOM UNION LIMITED | Private company limited by shares | Live |
| UNION DRAGON LIMITED | Private company limited by shares | Dissolved |
| UNION GREAT HOLDINGS LIMITED | Private company limited by shares | Live |
| SHENZHEN UNION ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| MAGIC UNION LIMITED | Private company limited by shares | Live |
| UNION FAITH TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION WINNER DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION HILL LIMITED | Private company limited by shares | Dissolved |
| UNION SHIPS YARDS SERVICES LIMITED | Private company limited by shares | Live |
| VANTAGE UNION LIMITED | Private company limited by shares | Dissolved |
| ON UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION ON DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION WEALTH DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION GAIN ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION GREAT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION WELL TRADING LIMITED | Private company limited by shares | Live |
| UNION MARK INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ON UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| NEW UNION LIMITED | Private company limited by shares | Dissolved |
| UNION PLANET LIMITED | Private company limited by shares | Live |
| UNION TACTIC LIMITED | Private company limited by shares | Live |
| UNION BEST INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION PROFIT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ALLIED UNION (H.K.) LIMITED | Private company limited by shares | Live |
| UNION EXCEL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HONGKONG HEBEI COMMERCIAL UNION LIMITED | Private company limited by shares | Live |
| CHINESE UNION OF COMMERCE LIMITED | Private company limited by shares | Live |
| International Buddhist Union Limited | Company limited by guarantee | Live |
| UNION POWER TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL LOGISTICS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION FORTUNE (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS (ASIA) LIMITED | Private company limited by shares | Live |
| TROIKA UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| AR-SC UNION CO., LIMITED | Private company limited by shares | Dissolved |
| HTM UNION CO., LIMITED | Private company limited by shares | Live |
| UNION CENTURY CONSULTANTS LIMITED | Private company limited by shares | Live |
| CHINA UNION SPUNK LIMITED | Private company limited by shares | Live |
| TALENT UNION (HONG KONG) INVESTMENTS LIMITED | Private company limited by shares | Live |
| CWZ Metal Union Limited | Private company limited by shares | Dissolved |
| UNION ENERGY INVESTMENT LIMITED | Private company limited by shares | Live |
| ADshare Union HK Limited | Private company limited by shares | Live |
| Union Rich Property Investment Limited | Private company limited by shares | Live |
| CHINA MICE INDUSTRY UNION LIMITED | Private company limited by shares | Dissolved |
| GULF UNION MINERAL RESOURCES CO., LIMITED | Private company limited by shares | Dissolved |
| UNION RISE INTERNATIONAL HONGKONG CO., LIMITED | Private company limited by shares | Live |
| NEW UNION POWER LIMITED | Private company limited by shares | Dissolved |
| CHINA AUTOMOTIVE INDUSTRY UNION RESEARCH LIMITED | Private company limited by shares | Dissolved |
| UNION REPAIR TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Swift Union International Commerce Limited | Private company limited by shares | Live |
| Union Wealth Technology Limited | Private company limited by shares | Dissolved |
| Wai Union Engineering & Trading Company Limited | Private company limited by shares | Live |
| AFRICAN UNION FOR EXPORT AND TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| JAPAN UNION OIL (CHINA) LIMITED | Private company limited by shares | Live |
| Buddhism Cultural Foundation Union Limited | Private company limited by shares | Dissolved |
| UNION CREATION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| WORLD UNION VISION GROUP LIMITED | Private company limited by shares | Live |