| UNCOVER HK Limited | Private company limited by shares | Live |
| EASTERN UNION TRADING SERVICES LIMITED | Private company limited by shares | Live |
| GREEN UNION OPTOELECTRONIC LIMITED | Private company limited by shares | Live |
| UNITED STATES OF AMERICA BLACK CEREALS GROUP INVESTMENT LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL LOGISTIC LIMITED | Private company limited by shares | Live |
| Union Energy Technology Co., Limited | Private company limited by shares | Live |
| UNITARY INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| BEST OF BEST UNIVERSAL LIMITED | Private company limited by shares | Live |
| National Health Industry Union Limited | Private company limited by shares | Live |
| UNION TELCO LIMITED | Private company limited by shares | Live |
| RICH UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION TRADING (H.K.) LIMITED | Private company limited by shares | Live |
| UNIBACKUP INTERNATIONAL (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| CHINA INNOVATION UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION PACIFIC CONSULTANTS LIMITED | Private company limited by shares | Live |
| UNIQUE MUSIC LIMITED | Private company limited by shares | Live |
| CHAMPION UNION (HK) DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION BUSINESS RESOURCES HONG KONG LIMITED | Private company limited by shares | Live |
| PRO UNI-TRADE LIMITED | Private company limited by shares | Live |
| TREASURE UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL SHIPPING GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION LUCK CULTURE MEDIA LIMITED | Private company limited by shares | Live |
| INTERNATIONAL MOVIE STAR UNITED CULTURE ASSOCIATION LIMITED | Private company limited by shares | Live |
| SMART UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION TOP INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ASIAN UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| ETERNAL UNION INDUSTRY AND COMMERCE CO., LIMITED | Private company limited by shares | Live |
| UNION DRAGON INVESTMENTS LIMITED | Private company limited by shares | Live |
| Union Trading (Holdings) Limited | Private company limited by shares | Live |
| GIANT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| BEST UNION GROUP LIMITED | Private company limited by shares | Live |
| Union Farming Limited | Private company limited by shares | Live |
| UNMCLH CO., LIMITED | Private company limited by shares | Live |
| GLORY UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| SUN UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Uniglo Limited | Private company limited by shares | Dissolved |
| UNITED SUCCESS CAPITAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| HOLY UNIVERSE LIMITED | Private company limited by shares | Live |
| DYNASTY UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNION SKY CREATION LIMITED | Private company limited by shares | Live |
| UNITED FORCE INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNBOUNDED ALLIANCE INT'L GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| New Century Union Holdings Group Limited | Private company limited by shares | Live |
| UNION WISE FOOD AND CATERING GROUP LIMITED | Private company limited by shares | Live |
| United WW Company Limited | Private company limited by shares | Live |
| GOOD UNION CONSTRUCTION (CHINA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED FACTORY EXPORTING LIMITED | Private company limited by shares | Live |
| INTERNATIONAL CREATIVE INDUSTRY UNION LIMITED | Private company limited by shares | Live |
| UNIQUEDECO LIGHTING CO., LIMITED | Private company limited by shares | Live |
| Unimines Limited | Private company limited by shares | Dissolved |
| STAR UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION BUSINESS SERVICE COMPANY LIMITED | Private company limited by shares | Dissolved |
| KONG UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION SKY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| FUXIANG & DONGRUI UNITED COMPANY LIMITED | Private company limited by shares | Live |
| K&M Union (Asia) Company Limited | Private company limited by shares | Live |
| Ever Union Medical Group Limited | Private company limited by shares | Live |
| Ever Union Medical Services Group Limited | Private company limited by shares | Live |
| UNOSON LIMITED | Private company limited by shares | Live |
| CREATICH UNION LIMITED | Private company limited by shares | Live |
| UNIQUE CADEAU LIMITED | Private company limited by shares | Live |
| TIP TOP UNION LIMITED | Private company limited by shares | Live |
| Unitopcn Technology Co., Limited | Private company limited by shares | Live |
| UNERC LIMITED | Private company limited by shares | Live |
| UNIVERSE CITIZEN LIMITED | Private company limited by shares | Live |
| MOMENTIVE UNION SPECIALTY CHEMICALS LIMITED | Private company limited by shares | Live |
| GRAND UNITED NETWORKS LIMITED | Private company limited by shares | Dissolved |
| Global Union Motors Limited | Private company limited by shares | Dissolved |
| Union Dry Goods Limited | Private company limited by shares | Live |
| UNION WORLDWIDE ELECTRONIC TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| CHINA UNIMPEDED FLOURISHING INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Live |
| Tsinghua University Education Group Limited | Private company limited by shares | Live |
| INTERNATIONAL UNION OF PHOTOGRAPHERS LIMITED | Private company limited by shares | Live |
| UNIC ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| HUA AI UNION CO., LIMITED | Private company limited by shares | Dissolved |
| WORLD EMINENT ZS ENTREPRENEUR UNION LIMITED | Private company limited by shares | Dissolved |
| UNION GROUP TRADING (YI WU) COMPANY LIMITED | Private company limited by shares | Live |
| SUPER UNION GROUP (HK) CO., LIMITED | Private company limited by shares | Live |
| FAME UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION SPECIAL LIMITED | Private company limited by shares | Live |
| Max Union International Holding Limited | Private company limited by shares | Live |
| UNIVERSE ACCESSORIES LIMITED | Private company limited by shares | Live |
| UNION T&H HONG KONG CO., LIMITED | Private company limited by shares | Live |
| Unionsnab Limited | Private company limited by shares | Dissolved |
| UNION EASTERN GATE LIMITED | Private company limited by shares | Live |
| LMS Universal Trading Limited | Private company limited by shares | Dissolved |
| United Continent Holding Limited | Private company limited by shares | Live |
| UNION (GERMANY) AUTO PARTS ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| CHINA UNION INT'L DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| PINE UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION CHINA ENGINEERING LIMITED | Private company limited by shares | Live |
| METRO UNIVERSAL LIMITED | Private company limited by shares | Live |
| STAR UNION HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION SUNSHINE LIMITED | Private company limited by shares | Live |
| UNION GOAL LIMITED | Private company limited by shares | Live |
| WORLD UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| HEAD UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| MEGA UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| KEY UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION CHINA DEVELOPMENT LIMITED | Private company limited by shares | Live |