| UNION WAY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION SUN DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL FINANCE (CHINA) LIMITED | Private company limited by shares | Live |
| Uni-Bulk Hong Kong Limited | Private company limited by shares | Dissolved |
| UNION (GROUP) INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL (GROUP) INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| MAN WO UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITED PLUS ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION TECH INTERNATIONAL INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL BEAUTICIAN ASSOCIATION (ASIA PACIFIC) UNION LIMITED | Private company limited by shares | Live |
| EASYWIN UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL 500 ENTERPRISES COMMITEE COMPANY LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNITY LIMITED | Private company limited by shares | Dissolved |
| FINE UNITY LIMITED | Private company limited by shares | Live |
| UNIQUE SHIPPING LIMITED | Private company limited by shares | Live |
| UNION-GLORY SHIPPING CO., LIMITED | Private company limited by shares | Dissolved |
| UNION DUTY LIMITED | Private company limited by shares | Live |
| AIG United Guaranty Insurance (Asia) Limited | Private company limited by shares | Live |
| UNION STANDARD LIMITED | Private company limited by shares | Dissolved |
| DRAGON UNION CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| TOP EAST UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION FIVE PRINTING PRODUCT COMPANY LIMITED | Private company limited by shares | Live |
| UNICITY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| JET UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION WEALTH (H.K.) LIMITED | Private company limited by shares | Dissolved |
| WELL UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION FAME (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION RICH INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION HARVEST TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WAY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION FAME HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION RICH TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| POWER UNION JEWELLERY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL OCEAN SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| SOUTH UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| UNION HIGHWAY GROUP LIMITED | Private company limited by shares | Live |
| UNION LEGEND LIMITED | Private company limited by shares | Dissolved |
| SINO UNION LIMITED | Private company limited by shares | Live |
| CITY UNION LIMITED | Private company limited by shares | Dissolved |
| HONG KONG COMMUNICATION UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MERCHANDISE LIMITED | Private company limited by shares | Dissolved |
| UNION PETRO EQUIPMENT LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SPORT CLIMBING UNION LIMITED | Company limited by guarantee | Dissolved |
| ROYAL UNITED LIMITED | Private company limited by shares | Live |
| DRAGON UNITED LIMITED | Private company limited by shares | Live |
| CHINA UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| Unlimited Solutions Limited | Private company limited by shares | Live |
| CHINA UNITED SPORT ENTERTAINMENT GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| TERRA UNITED CAPITAL LIMITED | Private company limited by shares | Dissolved |
| POWER UNITY LIMITED | Private company limited by shares | Dissolved |
| WALL STREET ANGLO-AMERICAN UNITED INTERNATIONAL GROUP LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION GARMENT LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS TRADING LIMITED | Private company limited by shares | Dissolved |
| WORLD UNIVERSITY UNION TECHNOLOGY ZONE LIMITED | Private company limited by shares | Dissolved |
| CHAMPION UNION LIMITED | Private company limited by shares | Live |
| HONGKONG TOP UNION DECORATION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ELECTRIC COMPANY LIMITED | Private company limited by shares | Live |
| UNION HERO INVESTMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 30-May-2014 |
| UNIECO LIMITED | Private company limited by shares | Live |
| PRETTY UNIVERSAL LIMITED | Private company limited by shares | Live |
| CHINA UNION DAILY MEDIUM GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION FULL TRADING LIMITED | Private company limited by shares | Live |
| BEST UNION CHILLED MEAT COMPANY LIMITED | Private company limited by shares | Live |
| SINO UNION FAR EAST LIMITED | Private company limited by shares | Dissolved |
| EAST UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| TOTAL UNION LIMITED | Private company limited by shares | Dissolved |
| STAR UNION REALTY GROUP (HOLDING) LIMITED | Private company limited by shares | Dissolved |
| USA DEALERS UNION INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| M. P. L. UNITED CO., LIMITED | Private company limited by shares | Live |
| UNCLE PRESENT COMPANY LIMITED | Private company limited by shares | Live |
| MEGA UNION INC. LIMITED | Private company limited by shares | Live |
| SINO UNION ASIA GROUP LIMITED | Private company limited by shares | Live |
| PAN UNIVERSE INTERNATIONAL (HK) CO., LIMITED | Private company limited by shares | Live |
| AMPLE UNION LIMITED | Private company limited by shares | Live |
| OCEAN UNION INTERNATIONAL LOGISTICS CO., LIMITED | Private company limited by shares | Live |
| UNION JOIN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SINO UNION LOGISTICS LIMITED | Private company limited by shares | Live |
| UNIVERSAL STANDARD LIMITED | Private company limited by shares | Dissolved |
| UNISON PROJECT SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION (HK) LIMITED | Private company limited by shares | Dissolved |
| UNI-1 TECHNOLOGY LIMITED | Private company limited by shares | Live |
| HONG KONG UNION PROPERTIES LIMITED | Private company limited by shares | Live |
| RIGHT UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| RIGHT UNION ENTERPRISE LIMITED | Private company limited by shares | Live |
| TRINITY UNIVERSAL CO., LIMITED | Private company limited by shares | Dissolved |
| UNITED HERO INVESTMENT LIMITED | Private company limited by shares | Live |
| CHINA KENNEL UNION COMPANY LIMITED | Private company limited by shares | Live |
| PARK UNION (CHINA) LIMITED | Private company limited by shares | Live |
| SINO UNION INVESTMENT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| World Ewriter Union Limited | Private company limited by shares | Dissolved |
| NOYA UNION CO., LIMITED | Private company limited by shares | Live |
| TEAM UNIVERSAL LIMITED | Private company limited by shares | Live |
| HK UNION (CHINA) ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| AJ UNITED CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL RIVER GROUP LIMITED | Private company limited by shares | Live |
| UNITED SHIPPING LINES LIMITED | Private company limited by shares | Live |
| UNITED FASHION LAB LIMITED | Private company limited by shares | Dissolved |