| COMMERCIAL UNION INT'L INDUSTRIAL LIMITED | Private company limited by shares | Live |
| RICH UNION CORPORATION LIMITED | Private company limited by shares | Live |
| TREASURE UNION (HK) LIMITED | Private company limited by shares | Live |
| UNISTRAW LIMITED | Private company limited by shares | Live |
| UNITED WISDOM TRADING LIMITED | Private company limited by shares | Dissolved |
| UNI-TONE LIMITED | Private company limited by shares | Dissolved |
| Unison Project Finance Limited | Private company limited by shares | Live |
| UNITED GOLD LIMITED | Private company limited by shares | Live |
| UNION ABLE CORPORATION LIMITED | Private company limited by shares | Live |
| UnionChina International Management Institute Limited | Private company limited by shares | Live |
| GUANGZHOU UNION TEXTILE LIMITED | Private company limited by shares | Live |
| SHENZHEN UNIQUE INNOVATION LIMITED | Private company limited by shares | Dissolved |
| Strong Union (HK) Industrial Limited | Private company limited by shares | Live |
| SINO UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION POWER INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| National Union Resources Development Co., Limited | Private company limited by shares | Dissolved |
| PREMIER UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL TRADE ROUTE LIMITED -THE- | Private company limited by shares | Live |
| HK UNITY GRAND GROUP TRADE LIMITED | Private company limited by shares | Live |
| Peak Unique Limited | Private company limited by shares | Live |
| MIDWAY UNION LIMITED | Private company limited by shares | Live |
| UNIVERSAL TALENT LIMITED | Private company limited by shares | Live |
| NEW UNION CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNITED CENTRE LIMITED | Private company limited by shares | Dissolved |
| JOIN UNITY LIMITED | Private company limited by shares | Live |
| NEW UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| HONGKONG SUPERIOR UNION ENERGY COMPANY LIMITED | Private company limited by shares | Live |
| TOP UNION INT'L TRADE CO., LIMITED | Private company limited by shares | Live |
| UNION STONE GROUP LIMITED | Private company limited by shares | Live |
| ORIENT UNION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Unity Creative Endeavours Limited | Private company limited by shares | Live |
| UNION SUCCESS BUILDING MATERIALS AND ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| Universal Robot Hong Kong Limited | Private company limited by shares | Live |
| HK UNITED WEALTH TRADING LIMITED | Private company limited by shares | Live |
| UNIVERSE STAR LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE INTERNATIONAL GROUP (HK) LIMITED | Private company limited by shares | Live |
| UNI-APEX (HK) CO., LIMITED | Private company limited by shares | Live |
| SUPER UNION INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| GREAT GLOBAL UNION LIMITED | Private company limited by shares | Live |
| SKY UNION INVESTMENT AND CONSULTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| POWER UNION TECHLINKS MANUFACTURE (HK) LIMITED | Private company limited by shares | Live |
| UNIVERSAL MIRACLE LIMITED | Private company limited by shares | Dissolved |
| Beauty University Management Limited | Private company limited by shares | Live |
| UNIBIZ LIMITED | Private company limited by shares | Live |
| NEW UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| NEW UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| TOP UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| SINO UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBAL PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CHINA UNION PUBLISHING MEDIA GROUP LIMITED | Private company limited by shares | Live |
| UNITY SPORTS INDUSTRIAL LIMITED | Private company limited by shares | Live |
| 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 |
| HONGKONG ZHENYAO INTERNATIONAL UNDERWEAR MANUFACTURING CO., 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 |