| UNION FIRST INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION FAME HOLDINGS LIMITED | Private company limited by shares | Live |
| GOOD UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION GLOBAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIMPEDED SEA HOLDING LIMITED | Private company limited by shares | Live |
| Universal Technologies Investment Limited | Private company limited by shares | Live |
| UNION ABRASIVES INDUSTRIAL LIMITED | Private company limited by shares | Live |
| ASIA UNITED GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION RIGHT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION GRAND GROUP CO., LIMITED | Private company limited by shares | Live |
| United States-Day Health Medical Supplies Ya Tuo International Group Co., Limited | Private company limited by shares | Live |
| GLOBAL UNIVERSE LIMITED | Private company limited by shares | Live |
| 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 |
| MAXIMUM UNIVERSAL LIMITED | Private company limited by shares | Live |
| Three Union Technology (Hong Kong) Limited | Private company limited by shares | Live |
| UNI-DEV HK LIMITED | Private company limited by shares | Live |
| UNISON ELECTRONICS INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| ASIA TOURISM UNION GROUP LIMITED | Private company limited by shares | Live |
| Universal Dreams 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 |
| UNISOURCE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION SYSTEM DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIDESIGN INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| SMART UNITED LIMITED | Private company limited by shares | Live |
| FORTRESS UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL SKY ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNIVERSAL GUIDE 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 |
| United Dynasty Investment Group 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 |
| UNIVERSE RICH LIMITED | Private company limited by shares | Live |
| GLORY UNIVERSE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIHUB (HK) ELECTRONICS LIMITED | Private company limited by shares | Live |
| UNIVERSE SOAR MICROELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| UNIQUE EDUCATION SERVICE HUB COMPANY LIMITED | Company limited by guarantee | Live |
| Wave Union International Limited | Private company limited by shares | Live |
| UNICON INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNI-SOURCE INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL (HK-CHINA) LIMITED | Private company limited by shares | Dissolved |
| VIP UNITED LIMITED | Private company limited by shares | Live |
| UNION GROUP SHARES INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| UNIR Choice (HK) Limited | Private company limited by shares | Live |
| UNIR (HK) Management Limited | Private company limited by shares | Live |
| POWER UNIVERSE TRADING LIMITED | Private company limited by shares | Dissolved |
| 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 |
| LOREN UNITED LIMITED | Private company limited by shares | Live |
| BIG UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Zhongqiao United International Investment Group Co., Limited | Private company limited by shares | Live |
| Kflow Universal Limited | Private company limited by shares | Live |
| UNICONTROL LIMITED | Private company limited by shares | Live |
| FIT UNITED LIMITED | Private company limited by shares | Live |
| UNIWEALTH 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 |
| UNIQUE TRIKE LIMITED | Private company limited by shares | Live |
| UNION WEALTH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIQUE FASHION (ASIA) LIMITED | Private company limited by shares | Live |
| 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 |
| Universal Investment Management Limited | Private company limited by shares | Dissolved |
| Union Int'L Business Co., Limited | Private company limited by shares | Live |
| RICH UNION DEVELOP LIMITED | Private company limited by shares | Live |
| UNICO Asia Limited | Private company limited by shares | Live |
| UNITED SKY CAPITAL INVESTMENT 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 |
| UNIVERSE DEVELOP 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 |
| Universal Success Limited | Private company limited by shares | Dissolved |
| Universal E.W. Group Limited | Private company limited by shares | Live |
| China Financial Union Holdings Limited | Private company limited by shares | Dissolved |
| UNIVERSE FLY INTERNATIONAL TRADING 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 |
| Universal Star Production Company Limited | Private company limited by shares | Dissolved |
| 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 |
| UNITED CHOICE ENTERPRISE LIMITED | Private company limited by shares | Live |
| 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 |
| Premier Universal Group Limited | Private company limited by shares | Dissolved |
| UNION DRAGON LIMITED | Private company limited by shares | Dissolved |
| UNION GREAT HOLDINGS LIMITED | Private company limited by shares | Live |
| CHINA UNITED LIMITED | Private company limited by shares | Live |
| SHENZHEN UNION ELECTRONICS CO., LIMITED | Private company limited by shares | Live |