| UNION SEAS GROUP LIMITED | Private company limited by shares | Live |
| SMART UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| RICH UNION FINANCIAL ADVISORY LIMITED | Private company limited by shares | Dissolved |
| KINGSWAY UNION LIMITED | Private company limited by shares | Dissolved |
| WORLD PLUM FLOWER UNION LIMITED | Private company limited by shares | Live |
| Union Step Tobacco & Cigarette Corporation Limited | Private company limited by shares | Dissolved |
| BUNKER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SIGNAL TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| TOP UNION HONG KONG GROUP LIMITED | Private company limited by shares | Live |
| KEEN UNION COMMUNICATIONS LIMITED | Private company limited by shares | Live |
| HK INTERNATIONAL WUSHU UNION LIMITED | Private company limited by shares | Dissolved |
| USA JIAJI INT'L UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION MACHINERY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| UNION BUSINESS INVESTMENT LIMITED | Private company limited by shares | Live |
| CHINA ENTERPRISE TECHNOLOGY UNION CONSULATION LIMITED | Private company limited by shares | Live |
| BANNER UNION APPLIED OPTICS (HK) LIMITED | Private company limited by shares | Live |
| WIN UNION LIMITED | Private company limited by shares | Live |
| UNION ACE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| RICH UNION INTERNATIONAL INVESTMENTS LIMITED | Private company limited by shares | Live |
| CHINA WINE IMPORTERS UNION LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL (OVERSEAS) PTE. LIMITED | Private company limited by shares | Live |
| UNION WELL CAPITAL RESOURCES LIMITED | Private company limited by shares | Live |
| HONGKONG UNION CHUNG INDL LIMITED | Private company limited by shares | Live |
| HONGKONG UNION HEYDAY INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| HK GLOBAL UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| JOYFUL UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| WELL UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION MANUFACTURING CORPORATION LIMITED | Private company limited by shares | Live |
| YIWU UNION GROUP IMPORT & EXPORT COMPANY LIMITED | Private company limited by shares | Live |
| UNION WELL INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION ASIA PACIFIC INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION WIN INTERNATIONAL INDUSTRY LIMITED | Private company limited by shares | Live |
| UNION BOND PIGMENTS HK LIMITED | Private company limited by shares | Live |
| HK UNION HUNDRED BIOLOGY TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| CHARMING UNION COMPANY LIMITED | Private company limited by shares | Live |
| CHAMPION UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| PEIL (UNION) GROUP LIMITED | Private company limited by shares | Live |
| FIRST UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| RISING UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| WORLD CULTURE ART UNION ASSOCIATION LIMITED | Private company limited by shares | Live |
| HONG KONG SINO UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| STAR UNION (HK) GROUP CO., LIMITED | Private company limited by shares | Live |
| UNION ABLE LIMITED | Private company limited by shares | Dissolved |
| UNION FASHION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| BEST UNION (CHINA) LIMITED | Private company limited by shares | Live |
| UNION TACT (ASIA) LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION FUND LIMITED | Private company limited by shares | Dissolved |
| TRIPLE UNION CONSULTING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD AISA TRADING LIMITED | Private company limited by shares | Dissolved |
| TOP UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| BRITISH SAINTLY UNION LIMITED | Private company limited by shares | Live |
| International Returnees Union Limited | Private company limited by shares | Live |
| UNION BRIGHT ASIA GROUP LIMITED | Private company limited by shares | Live Commenced dormancy on 05-Feb-2016 |
| CHINA EMC UNION LIMITED | Private company limited by shares | Dissolved |
| HAPPY UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION LINKER DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION CHINA LIMITED | Private company limited by shares | Dissolved |
| VICTORY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| China Rushang Union Limited | Private company limited by shares | Live |
| UNION POWER MANUFACTURING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN BRILLIANCE LIMITED | Private company limited by shares | Dissolved |
| BELL UNION LIMITED | Private company limited by shares | Dissolved |
| FORTUNE UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION EMPRESARIAL LIMITED | Private company limited by shares | Live |
| CHINA UNION HELI ENERGY SOURCES LIMITED | Private company limited by shares | Live |
| CHARTER UNION LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI HUILI DETXTER (HK) UNION LIMITED | Private company limited by shares | Dissolved |
| PEACE UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| HONG UNION SHIPPING LIMITED | Private company limited by shares | Live |
| LUCKY UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Needle Workers Union Limited | Private company limited by shares | Live |
| CHINA UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CENTURY UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION HUGE LIMITED | Private company limited by shares | Live |
| World Chinese Businessman Enterpriser Union Limited | Private company limited by shares | Live |
| UNION SKY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| HK UNION ELECTRIC GLOBAL CO., LIMITED | Private company limited by shares | Live |
| International Union of Cross-Swimming Limited | Private company limited by shares | Live |
| Fortune Union Group Limited | Private company limited by shares | Live |
| ABLE UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| Union Tobacco International Limited | Private company limited by shares | Live |
| JET UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION FAIR HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| COMMON UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION BIG LIMITED | Private company limited by shares | Live |
| Union Master Shipping Co., Limited | Private company limited by shares | Live |
| HONGKONG UNION WELL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Joinsum Union Limited | Private company limited by shares | Live |
| UNION HEART TRADING LIMITED | Private company limited by shares | Live |
| UNION PREAY LIMITED | Private company limited by shares | Live |
| WORLD CHINESE MERCHANTS UNION ASSOCIATION LIMITED | Private company limited by shares | Live |
| STRAIT UNION INVESTMENT GROUP LIMITED | Private company limited by shares | Live |
| CHANGZHOU UNION MACHINE ELECTRICITY LIMITED | Private company limited by shares | Live |
| ETERNAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIONWAY CREATION LIMITED | Private company limited by shares | Live |
| NETWORK UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |