| BEST UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION CAP & BAG LIMITED | Private company limited by shares | Dissolved |
| UNION BROAD HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| Union Global Finance Management Company Limited | Private company limited by shares | Dissolved |
| MEGA UNION INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| SINO UNION GARMENT LIMITED | Private company limited by shares | Live |
| UNION BASIC TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION HONEST (CHINA) LIMITED | Private company limited by shares | Live |
| MAIN UNION LIMITED | Private company limited by shares | Live |
| WELL UNION INDUSTRIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONGKONG TOP UNION TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION LIMITED | Private company limited by shares | Live |
| PACIFIC UNION MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CREATIVE INVESTMENT (HK) LIMITED | Private company limited by shares | Live |
| UNION PROFIT TRADING LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUPERB UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| GREENWOOD COSMETIC UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| Union Electrical Works (Kwan Hoi) Limited | Private company limited by shares | Dissolved |
| UNIONWAY SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNION SKY HOLDINGS LIMITED | Private company limited by shares | Live |
| JS COMMODITY UNION LIMITED | Private company limited by shares | Live |
| SILVER UNION ASIA LIMITED | Private company limited by shares | Live |
| UNION CHEST LIMITED | Private company limited by shares | Live |
| MEGE UNION (HONGKONG) INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNION INDUSTRIAL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION FORTUNE INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CHAMP ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION GAIN TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| MANCHESTER INTERNATIONAL UNION LIMITED | Private company limited by shares | Live |
| DELIGENT UNION SERVICES HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION GROUP DEVELOPMENT LIMITED | Private company limited by shares | Live |
| HONGKONG UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| KEEN UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION TRUTH LIMITED | Private company limited by shares | Dissolved |
| GREEN UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| MARVELOUS UNION LIMITED | Private company limited by shares | Dissolved |
| GREEN CHINA CONSUMPTION UNION LIMITED | Private company limited by shares | Dissolved |
| UNION TALENT ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION BASE MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNION SUCCESS PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| VAB INDUSTRY UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION LINK INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION FAR EAST GROUP LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNION MECHANICAL & ELECTRICAL CO. LIMITED | Private company limited by shares | Live |
| MARINE UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| WEALTH UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION MASTER ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION RICH DEVELOPMENT (HOLDING) LIMITED | Private company limited by shares | Live |
| UNION GALAXY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| UNION ON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GERMANY CROWD HIGH-TECH LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN LIMITED | Private company limited by shares | Live |
| MERIT UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HK GREAT UNION INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| OASIS UNION LIMITED | Private company limited by shares | Live |
| SILVER UNION LIMITED | Private company limited by shares | Dissolved |
| VAST UNION LIMITED | Private company limited by shares | Live |
| UNION VICTOR INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION PRECISION COMPONENT COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG WISDOM UNION CO., LIMITED | Private company limited by shares | Live |
| GOLDEN UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| SILVER UNION INVESTMENT (GROUP) LIMITED | Private company limited by shares | Dissolved |
| UNION RICH CONSULTANTS LIMITED | Private company limited by shares | Live |
| DBA UNION MANUFACTURE LIMITED | Private company limited by shares | Dissolved |
| UNION GRAND (H.K.) LIMITED | Private company limited by shares | Live |
| UNION GOLD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| JIAJIESHI (H.K.) UNION CO., LIMITED | Private company limited by shares | Dissolved |
| SEA UNION CO., LIMITED | Private company limited by shares | Dissolved |
| TZE UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION GOLDEN LIMITED | Private company limited by shares | Live |
| TREASURE UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION MAX ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN HOLDINGS LIMITED | Private company limited by shares | Live |
| EVER UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION STARS INTERNATIONAL INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION FAITH SECRETARIAL & TAXATION LIMITED | Private company limited by shares | Dissolved |
| GLORIOUS UNION LIMITED | Private company limited by shares | Dissolved |
| UNION METAL AND PLASTIC MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| UNION POWER HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL CONTRACTORS LIMITED | Private company limited by shares | Dissolved |
| UNION WIN (HONG KONG) ENTERPRISES LIMITED | Private company limited by shares | Live |
| FAMOUS UNION LIMITED | Private company limited by shares | Live |
| UNION GROUP INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION POWER GROUP COMPANY LIMITED | Private company limited by shares | Live |
| UNION FIELD LIMITED | Private company limited by shares | Dissolved |
| UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION FIRST INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| PINE UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| WORLD RESOURCE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION FUTURE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION FUTURE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION SHIPPING LIMITED | Private company limited by shares | Dissolved |
| WIDE UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| AVANT-GARDE UNION LIMITED | Private company limited by shares | Dissolved |