| Royal Union Hong Kong Limited | Private company limited by shares | Live |
| UNION STEEL LIMITED | Private company limited by shares | Live |
| WORLD CHINESE COLLECTORS UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION BASE TECHNICAL SERVICES LIMITED | Private company limited by shares | Live |
| Uni-capital Group Holding Limited | Private company limited by shares | Live |
| QINGDAO UNITED UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNSTOPPABLE WIND COMPANY LIMITED | Private company limited by shares | Live |
| CHINA UNITED CONTINENT TAX NETWORK LIMITED | Private company limited by shares | Live |
| THREE UNION PROPERTIES LIMITED | Private company limited by shares | Live |
| UNIVERSE METAL CAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| JP United Limited | Private company limited by shares | Live |
| UNITED INTELLIGENCE TRADING GROUP (CHINA) CO., LIMITED | Private company limited by shares | Dissolved |
| Union Clive Engineering Limited | Private company limited by shares | Live |
| CREATIVE AQUASCAPE UNION LIMITED | Private company limited by shares | Live |
| Shenzhen Union Lighting Technology Co., Limited | Private company limited by shares | Live |
| UNION SPACE DESIGN LIMITED | Private company limited by shares | Live |
| UNISON FASHIONS LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION FUN INTERNATIONAL INVESTMENT GROUP LIMITED | Private company limited by shares | Dissolved |
| UNICOMDA ELECTRONICS CO., LIMITED | Private company limited by shares | Live |
| TinaBian China Travel Union Co., Limited | Private company limited by shares | Dissolved |
| FORTUNE UNION INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| VAST UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE MIND LIMITED | Private company limited by shares | Live |
| CHONGQING TECHNOLOGY AND BUSINESS UNIVERSITY S&T DEVELOPING LIMITED | Private company limited by shares | Live |
| United Goods Group Limited | Private company limited by shares | Dissolved |
| PROFOUND UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN CONTAINERS (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| UNILITE INDUSTRIAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| INSTITUTE FOR MARKETING TECHNOLOGY OF UNITED STATES & EUROPEAN UNION LIMITED | Private company limited by shares | Live |
| UNIVER CAPITAL LIMITED | Private company limited by shares | Dissolved |
| GOLD UNITED TRADING LIMITED | Private company limited by shares | Live |
| ZHEJIANG UNIVERSITY HONG KONG OFFICE LIMITED | Private company limited by shares | Live |
| UNITED FANCY LIMITED | Private company limited by shares | Live |
| UNIVERSAL OCEAN LIMITED | Private company limited by shares | Live |
| MUTUAL UNION LIMITED | Private company limited by shares | Dissolved |
| HOLLAND HAYLLIX UNION LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION CORPORATION LIMITED | Private company limited by shares | Live |
| INTERNATIONAL FURNISHING RESEARCH UNION CO., LIMITED | Private company limited by shares | Dissolved |
| EXCELLENT UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| DONGTAI FUAN UNIVERSAL DYNAMICS LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION JOINT CHINA LIMITED | Private company limited by shares | Dissolved |
| ZHEJIANG NOVEL UNION CO., LIMITED | Private company limited by shares | Live |
| Canadian University Union Co., Limited | Private company limited by shares | Dissolved |
| SHENZHEN UNION TECH CO., LIMITED | Private company limited by shares | Live |
| UNION WAY INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION POWER GARMENT LIMITED | Private company limited by shares | Live |
| TALENTUL EMBELLISH UNITED LIMITED | Private company limited by shares | Live |
| Pacific Union Technologies Co., Limited | Private company limited by shares | Live |
| CHINA HERO UNION GROUP CO., LIMITED | Private company limited by shares | Live |
| United States Roly Education Investment Holdings Co., Limited | Private company limited by shares | Dissolved |
| HK REDCHINA ENTERPRISE UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED POWER INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED FORTUNE ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| Unique Holding Limited | Private company limited by shares | Dissolved |
| LONG UNITED LIMITED | Private company limited by shares | Live |
| UNI-HIGHT INDUSTRY DEV CO., LIMITED | Private company limited by shares | Live |
| UNITED EXCELLENCE LIMITED | Private company limited by shares | Live |
| SEA UNION MARINE CO., LIMITED | Private company limited by shares | Live |
| Universal Precision Industrial Investment Company Limited | Private company limited by shares | Live |
| MASTER UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| SUNSHINE UNION LIMITED | Private company limited by shares | Live |
| UNION PLANNER LIMITED | Private company limited by shares | Live |
| GIANT UNION LIMITED | Private company limited by shares | Live |
| RISK UNLIMITED LIMITED | Private company limited by shares | Live |
| UNITED FLOW LIMITED | Private company limited by shares | Dissolved |
| UNI-CHANNEL LIMITED | Private company limited by shares | Live |
| UNION WELL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION TIP-TOP LIMITED | Private company limited by shares | Live |
| EXCEL UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| United Shoes Limited | Private company limited by shares | Dissolved |
| ASIA UNION GROUP LIMITED | Private company limited by shares | Live |
| GREAT UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION FORTUNE ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE CHAMPION LIMITED | Private company limited by shares | Live |
| OCEAN UNION GROUP LIMITED | Private company limited by shares | Live |
| MOST UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION COSMETIC CO., LIMITED | Private company limited by shares | Live |
| unEnding Fashion Company Limited | Private company limited by shares | Dissolved |
| UNIKS INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| UNION BEST MARINE (HK) CO., LIMITED | Private company limited by shares | Live |
| UNIQUE WEDDING LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION NATION HOLDINGS LIMITED | Private company limited by shares | Live |
| Unibetter Technology Co., Limited | Private company limited by shares | Live |
| TOP UNIVERSAL GROUP LIMITED | Private company limited by shares | Dissolved |
| M. Y. & UNION (HK) LIMITED | Private company limited by shares | Live |
| UNIONCONN CO., LIMITED | Private company limited by shares | Live |
| SAM UNION ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIPACIFIC INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION BASE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITED TRADING LIMITED | Private company limited by shares | Live |
| ASIAN UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNI-WELL TOYS (HK) CO., LIMITED | Private company limited by shares | Live |
| Unichef Trading Company Limited | Private company limited by shares | Live |
| CHINA UNIVERSE AGRICULTURE TECH. GROUP LIMITED | Private company limited by shares | Live |
| WORLD UNION HOLDING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION RAY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UniPing Limited | Private company limited by shares | Dissolved |
| CHAMP UNIVERSE LIMITED | Private company limited by shares | Live |