| UNION POWER (HK) INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION CHINA HOLDING GROUP LIMITED | Private company limited by shares | Live |
| Union Swift Payment Technology Limited | Private company limited by shares | Live |
| JIANGXI CHINA UNION HONGKONG INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIBAGS ASIA LIMITED | Private company limited by shares | Live |
| RISEN UNITED LIMITED | Private company limited by shares | Live |
| Grand Universe Industry Co., Limited | Private company limited by shares | Live |
| CHINA AGRICULTURE UNION LIMITED | Private company limited by shares | Live |
| TIANHE UNION STOCK LIMITED | Private company limited by shares | Live |
| UniCare Enterprise Limited | Private company limited by shares | Live |
| UNITY CREATION LIMITED | Private company limited by shares | Live |
| EVERICH UNION LIMITED | Private company limited by shares | Live |
| UNIQUE CHARM LIMITED | Private company limited by shares | Live |
| GOLD UNITY TRADE (CHINA) LIMITED | Private company limited by shares | Live |
| UNIVERSAL INDUSTRIAL (ASIA) CO., LIMITED | Private company limited by shares | Live |
| NATIVE UNION BESPOKE LIMITED | Private company limited by shares | Dissolved |
| UNION TRADING DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| OCEAN UNION INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| Universal Trading Solution Limited | Private company limited by shares | Live |
| UNION WAY INVESTMENT LIMITED | Private company limited by shares | Live |
| CHINA UNITECH INDUSTRY (HK) LIMITED | Private company limited by shares | Live |
| UNION (ASIA) ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| UNION SUCCESS INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION OCEAN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Universe Thunder (Hong Kong) Technology Company Limited | Private company limited by shares | Live |
| RIVER UNION LIMITED | Private company limited by shares | Dissolved |
| BRIGHT UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| LUCKY UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNIWELL INT'L GROUP CO., LIMITED | Private company limited by shares | Live |
| UNIMARK RESOURCES LIMITED | Private company limited by shares | Dissolved |
| LEADER UNION LIMITED | Private company limited by shares | Live |
| MUTUAL TRADE UNION CO., LIMITED | Private company limited by shares | Live |
| UNION DEVELOP GROUP (HK) COMPANY LIMITED | Private company limited by shares | Live |
| HARBER UNITED ARCHITECTURE GROUP COMPANY LIMITED | Private company limited by shares | Live |
| UNITY BTC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNITED MATERIALS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Unic Ultrasonic Technology Limited | Private company limited by shares | Live |
| Global Jishang Union Limited | Private company limited by shares | Live |
| UNISON INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| JJS UNION LIMITED | Private company limited by shares | Live |
| UNISON GROUP (CHINA) LIMITED | Private company limited by shares | Live |
| UNION ACCOUNTING AFFAIRS LIMITED | Private company limited by shares | Live |
| ANTONG UNION GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| GRAND UNITED FOREST-CHAIN CO., LIMITED | Private company limited by shares | Live |
| WISE UNION CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| JUSTIN UNION COMMERCIAL & TRADE CO., LIMITED | Private company limited by shares | Live |
| CHANG SHENG UNION TRADING LIMITED | Private company limited by shares | Live |
| United Resources Technology Limited | Private company limited by shares | Live |
| WORLD CHINESE TEACHING ENTERPRISE UNION LIMITED | Private company limited by shares | Dissolved |
| METAL UNION LIMITED | Private company limited by shares | Live |
| UNITED POWER ASIA LIMITED | Private company limited by shares | Live |
| Union Optical Glass Material Limited | Private company limited by shares | Live |
| Sea Union Fire Engineering Limited | Private company limited by shares | Live |
| MORALITY SEEKER UNION LIMITED | Company limited by guarantee | Live |
| UNION GROUP (1989) LIMITED | Private company limited by shares | Live |
| HOP LEE UNITED COMPANY LIMITED | Private company limited by shares | Live |
| Friends United Restaurant Company Limited | Private company limited by shares | Live |
| EG Union (Hong Kong) Company Limited | Private company limited by shares | Live |
| FIRST UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TEAM UNITED LIMITED | Private company limited by shares | Live |
| SUN UNION CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Live |
| BLUESTAR UNIVERSAL LIMITED | Private company limited by shares | Live |
| ASIA PACIFIC INT'L PEACE COMMITTE UNITED GROUP LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CAPITAL GROUP LIMITED | Private company limited by shares | Live |
| UNION HANDLING SERVICE LIMITED | Private company limited by shares | Live |
| HI-TECH UNION (HK) CO., LIMITED | Private company limited by shares | Live |
| UNION POWER TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| UNION ON TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| HK XINGCHEN UNITED INTERNATIONAL GROUP CULTURE SPREAD LIMITED | Private company limited by shares | Live |
| INTERNATIONAL DITAN UNION INDUSTRY LIMITED | Private company limited by shares | Live |
| KINGLY CAPITAL UNITED CO., LIMITED | Private company limited by shares | Live |
| LIJUN UNION GROUP LIMITED | Private company limited by shares | Live |
| HONG KONG UNION FITNESS INSTITUTE LIMITED | Private company limited by shares | Live |
| FUNG YING INTERNATIONAL UNION LIMITED | Private company limited by shares | Live |
| STAR UNION TRADING DEVELOP LIMITED | Private company limited by shares | Live |
| BROTHER UNION INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| UNISTEC TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| United-Smile Limited | Private company limited by shares | Live |
| UNITRANS H.K. INTERNATIONAL LOGISTICS CO., LIMITED | Private company limited by shares | Live |
| UNION WEALTHY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| WORLD ENTERPRISE UNION CO., LIMITED | Private company limited by shares | Live |
| UNION BRIGHT MANAGEMENT LIMITED | Private company limited by shares | Live |
| CHINA UNITED WINE EXCHANGE LIMITED | Private company limited by shares | Live |
| Uniglobe Trading Limited | Private company limited by shares | Live |
| HONEST UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| Union Integrity Trade (HK) Co., Limited | Private company limited by shares | Live |
| Unique Resource Enterprises Limited | Private company limited by shares | Live |
| UNITRADE LOGISTIC LIMITED | Private company limited by shares | Live |
| P.T. ANNEX UNIQUE LIMITED | Private company limited by shares | Live |
| UNI-CAPITAL GROUP LIMITED | Private company limited by shares | Live |
| CHINA GARMENT CUSTOMIZATION UNION LIMITED | Private company limited by shares | Dissolved |
| GLORY UNION HK LIMITED | Private company limited by shares | Dissolved |
| UNITED STATES TIANDI INTERNATIONAL HOLDINGS HONGKONG CO., LIMITED -THE- | Private company limited by shares | Live |
| DAISY UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| Universal Office Furniture Limited | Private company limited by shares | Live |
| STAR UNION ENTERTAINMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED WINFIELD COMPANY LIMITED | Private company limited by shares | Dissolved |
| STAR UNION CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| UNITECH-MOLD CO., LIMITED | Private company limited by shares | Live |
| Duma Universe Group Limited | Private company limited by shares | Live |