| UNION FAME INVESTMENT LIMITED | Private company limited by shares | Live |
| Unibest Metalwork Limited | Private company limited by shares | Dissolved |
| UNITED LAND TECHNOLOGY LIMITED | Private company limited by shares | Live |
| NEW UNIVERSE PACIFIC FINANCIAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNITED SUMMIT LIMITED | Private company limited by shares | Live |
| EVERBRIGHT UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| UNIMATRIX (HK) LIMITED | Private company limited by shares | Live |
| SUCCESS UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| ASIA UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| CHINA EVER UNIVERSE INTERNATIONAL RELIGION UNITED ASSOCIATION (BHM) HOLDING LIMITED | Company limited by guarantee | Dissolved |
| NEW UNION LIMITED | Private company limited by shares | Dissolved |
| UNION BASE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE EVENT LIMITED | Private company limited by shares | Dissolved |
| UNITED CROWN CENTURY COMPANY LIMITED | Private company limited by shares | Live |
| UNITED SINOBIZ INVESTMENT HOLDING GROUP CO., LIMITED | Private company limited by shares | Live |
| United Sportstyle Group Limited | Private company limited by shares | Dissolved |
| UNION WELL INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION TOP TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| STAR UNITY INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNISAT TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UNION BRIGHT TECHNOLOGY (CHINA) LIMITED | Private company limited by shares | Live |
| WORLD UNION PLASTIC MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL UTILITY AUTOMATION LIMITED | Private company limited by shares | Live |
| LUCAS UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNISEA TECHNOLOGY (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIONUP ELECTRONICS (HK) COMPANG LIMITED | Private company limited by shares | Live |
| UNITED TECH ASIA LIMITED | Private company limited by shares | Live |
| UNION FORTUNE LIMITED | Private company limited by shares | Live |
| UNIQUE THROUGH INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIGAME COMPANY LIMITED | Private company limited by shares | Live |
| WE UNITED LIMITED | Private company limited by shares | Live |
| UNIVERSAL ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ASSOCIATES TRADING LIMITED | Private company limited by shares | Live |
| UNITED OCEAN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| WORLD ZHEJIANG BUSINESS UNION GENERAL LIMITED | Private company limited by shares | Live |
| WORLD WENZHOU BUSINESS UNION GENERAL LIMITED | Private company limited by shares | Live |
| UNIQUENESS LIMITED | Private company limited by shares | Live |
| UNIVERSAL TOYS TRADING (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNITRON CO., LIMITED | Private company limited by shares | Dissolved |
| RESPLENDENCY UNIQUE LIMITED | Private company limited by shares | Live |
| UNIQUE GRACE LIMITED | Private company limited by shares | Dissolved |
| Metro Sham Shui Commerce Union Limited | Private company limited by shares | Live |
| SINO UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| SUCCESS UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| CTI UNITY ELECTRICAL WIRE LIMITED | Private company limited by shares | Dissolved |
| KONGSTAR UNIVERSAL INC. LIMITED | Private company limited by shares | Live |
| NEW UNION INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED RGB LIMITED | Private company limited by shares | Live |
| POWER UNITED FASHION LIMITED | Private company limited by shares | Live |
| TOP UNION INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNI-BRIGHT PROPERTIES LIMITED | Private company limited by shares | Live |
| MEGA UNIT LIMITED | Private company limited by shares | Live |
| CHINA UNION INVESTMENT SHARE CO., LIMITED | Private company limited by shares | Dissolved |
| LEADING UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CHINA HK UNITED INT'L CHEMICAL FERTILIZER IMPORT&EXPORT GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| EAST UNION (CHINA) METAL CO., LIMITED | Private company limited by shares | Live |
| Union Packaging and Printing Limited | Private company limited by shares | Live |
| UNITED HARMONY LIMITED | Private company limited by shares | Live |
| NEW UNIBRIGHT LIMITED | Private company limited by shares | Dissolved |
| UNION BROS. TRADING COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSITY OF PHYSICAL EDUCATION LIMITED | Private company limited by shares | Dissolved |
| UNITED SILVER LIMITED | Private company limited by shares | Dissolved |
| MIRACLE UNION (GLOBAL) CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL ADVERTISING COMPANY LIMITED | Private company limited by shares | Live |
| UNIKON COMPANY LIMITED | Private company limited by shares | Dissolved |
| Uni-link Limited | Private company limited by shares | Live |
| UNITED DIGITAL SOLUTIONS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION TONE INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIWELL INDUSTRY (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION METAL COOPERATION LIMITED | Private company limited by shares | Live |
| UNITEAM ENGINEERING LIMITED | Private company limited by shares | Live |
| UGRAND UNIVERSAL LIMITED | Private company limited by shares | Live |
| KILO UNIVERSAL LIMITED | Private company limited by shares | Live |
| METRO UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| TRADING UNION LIMITED | Private company limited by shares | Dissolved |
| UNION RISING LIMITED | Private company limited by shares | Live |
| UNION EXPO LIMITED | Private company limited by shares | Dissolved |
| ADVANCE UNION LIMITED | Private company limited by shares | Dissolved |
| UNI-FAMOUS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL POWER LIMITED | Private company limited by shares | Dissolved |
| UNIQUE BUSINESS LIMITED | Private company limited by shares | Live |
| UNIQUE WEALTH LIMITED | Private company limited by shares | Live |
| CHINESE ONLINE ANTI-PIRACY UNION LIMITED | Private company limited by shares | Dissolved |
| WEALTHY UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL MATE ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Union Business Service Limited | Private company limited by shares | Live |
| FULL UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNION CREATION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION CARGO INTERNATIONAL FORWARDER CO., LIMITED | Private company limited by shares | Live |
| DJL UNITED LIMITED | Private company limited by shares | Live |
| UNION CONCEPT INDUSTRIAL LIMITED | Private company limited by shares | Live |
| METRO UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE RESOURCE INDUSTRY LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION TEAM INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION SCORE HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION SENSE INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNION CENTURY TRADING LIMITED | Private company limited by shares | Live |
| Unison Hong Kong Engineering Company Limited | Private company limited by shares | Live |