| UNIVERSAL ENERGY SAVING LIMITED | Private company limited by shares | Live |
| UNITPOWER HK LIMITED | Private company limited by shares | Dissolved |
| UNIPROS (HONG KONG) LIMITED | Private company limited by shares | Live |
| China MBA Union Limited | Private company limited by shares | Live |
| UNIQUE EXPERT LIMITED | Private company limited by shares | Live |
| WEALTHY UNITY LIMITED | Private company limited by shares | Live |
| UNION STARS LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN YUNGSIN UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION CONCEPT DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION CONCORD INVESTMENTS LIMITED | Private company limited by shares | Live |
| LUCKY UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| Dragon Prance Universe Electronic Technology Limited | Private company limited by shares | Live |
| Aero Union Investment (HK) Limited | Private company limited by shares | Live |
| World New Chinese Entrepreneur Union Limited | Private company limited by shares | Live |
| PAY UNION E COMMERCE LIMITED | Private company limited by shares | Live |
| WEST UNION MANUFACTURING LIMITED | Private company limited by shares | Live |
| CHINA OVERALL HEALTH PROMOTION UNION LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| SKY UNION DEVELOPMENT (HK) LIMITED | Private company limited by shares | Live |
| UNITED BUSINESS LINKS LIMITED | Private company limited by shares | Live |
| UNIWAY INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| UNIQUE FUR COMPANY LIMITED | Private company limited by shares | Live |
| UNITECHFOOTWEAR (HONGKONG) INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| United Wealth (China)Trading Limited | Private company limited by shares | Live |
| UNISOURCE GROUP LIMITED | Private company limited by shares | Live |
| UNION MASTER CORPORATION LIMITED | Private company limited by shares | Live |
| UNION STARS INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| TH UNION INTERNATIONAL TRADING (H.K.) COMPANY LIMITED | Private company limited by shares | Live |
| China Union silicon Valley Tech Limited | Private company limited by shares | Live |
| CHINESE UNIVERSITY MEDICAL CENTRE & HOSPITAL LIMITED -THE- | Private company limited by shares | Dissolved |
| Sungate United Limited | Private company limited by shares | Live |
| UNI-I COMPANY LIMITED | Private company limited by shares | Live |
| Elite Union International Development Limited | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Live |
| UNION WTZ LIMITED | Private company limited by shares | Live |
| TECK UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITED TRIUMPH LIMITED | Private company limited by shares | Live |
| Uniqueray Technologies Limited | Private company limited by shares | Live |
| United World Chinese Association Culture & Leisure Limited | Private company limited by shares | Dissolved |
| HONG KONG EURO-ASIA UNION INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK UNION PRINTING TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UNION LAND LIMITED | Private company limited by shares | Live |
| UNIVERSAL OPTICAL CO., LIMITED | Private company limited by shares | Live |
| CITY UNION (CHINA) HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SKY UNIVERSAL INVESTMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 20-Aug-2013 |
| Unilife Co., Limited | Private company limited by shares | Dissolved |
| WORLD CHINESE ARTISTS CHINA PEACE UNIFIED ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| NEW ENERGY UNION GROUP HOLDING CO., LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| AC UNION INDUSTRIAL AND TRADING CO., LIMITED | Private company limited by shares | Dissolved |
| Uniteck Medical Co., Limited | Private company limited by shares | Dissolved |
| UNION FIRST (H.K.) LIMITED | Private company limited by shares | Live |
| World Union Group Limited | Private company limited by shares | Live |
| UNIPRODUCT NETWORK LIMITED | Private company limited by shares | Live |
| HK VINO PHOTOGRAPH UNION LIMITED | Private company limited by shares | Live |
| BEST UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED TRADING LUCKY LIMITED | Private company limited by shares | Live |
| UNINESS MARINE (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL EPOCH LIMITED | Private company limited by shares | Live |
| SILVER WEALTH UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNION SKY TRADING LIMITED | Private company limited by shares | Dissolved |
| SOURCE UNION INTERNATIONAL TRADE CO., LIMITED | Private company limited by shares | Live |
| Universal Parents Service (Hong Kong) Limited | Private company limited by shares | Live |
| Eupple Lighting Union Limited | Private company limited by shares | Live |
| UniEn Solutions Limited | Private company limited by shares | Dissolved |
| UNIFORTUNE TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION GALAXY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ANGEL UNION (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| UNION PROSPECT CORPORATION LIMITED | Private company limited by shares | Live |
| HONGKONG UNION HOLDINGS INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNIVERSE INTERNATIONAL DATA LIMITED | Private company limited by shares | Live |
| UNIQUE WAY ENTERPRISE LIMITED | Private company limited by shares | Live Commenced dormancy on 26-Feb-2016 |
| UNIQGIFT LIMITED | Private company limited by shares | Live |
| UNIVERSAL CORPORATE CONSULTING LIMITED | Private company limited by shares | Live |
| KINGLY UNITED INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| COMERCIO UNION INNOVADOR IMPORTEXPORT LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI UNISAILING INT'L CO., LIMITED | Private company limited by shares | Live |
| UNISOURCE INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED BROTHERS TRADING COMPANY LIMITED | Private company limited by shares | Live |
| UNIPOINT (HONG KONG) INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL VISION (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONGKONG UNION WIN INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| PINGHU UNITED UNION HK LIMITED | Company limited by guarantee | Live |
| UNIQUE DYNAMIC LIMITED | Private company limited by shares | Live |
| Universal Morning Metal Material Limited | Private company limited by shares | Live |
| UNITED WORLD CHINESE MEDICAL RESEARCH GROUP LIMITED | Private company limited by shares | Live |
| Common Union Management Limited | Private company limited by shares | Live |
| MEGA UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| EASTERN UNION ENTERPRISE CORP LIMITED | Private company limited by shares | Live |
| UNITED KIDS-GENETECH CENTER LIMITED | Private company limited by shares | Live |
| OUTSTANDING UNION LIMITED | Private company limited by shares | Live |
| UNION TENDA HK LIMITED | Private company limited by shares | Live |
| SINO UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED NATION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION CHOICE PROPERTIES LIMITED | Private company limited by shares | Live |
| International President and General Secretary Union Limited | Private company limited by shares | Dissolved |
| KIND UNION LIMITED | Private company limited by shares | Live |
| METRO UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| MASTER UNION CORPORATION LIMITED | Private company limited by shares | Live |
| AKERS INTERNATIONAL UNION FOOD (ASIA) LIMITED | Private company limited by shares | Dissolved |