| UNIVERSE CHEMICALS TRADING CO., LIMITED | Private company limited by shares | Live |
| UNION VICTORY ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION CHARTER ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CHARTER UNION FINANCE LIMITED | Private company limited by shares | Live |
| UNION VICTORY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNIONSOURCES.COM LIMITED | Private company limited by shares | Dissolved |
| EBIZ UNIVERSITY LIMITED | Private company limited by shares | Dissolved |
| UNION CHEMICALS MATERIAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MOTOR SERVICE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE VICTORY INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNIVERSAL (HONG KONG) TECHNOLOGY CO. LIMITED | Private company limited by shares | Live |
| DIGITAL UNION LIMITED | Private company limited by shares | Dissolved |
| EVER UNION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| UNITED ASIAN TRADING LIMITED | Private company limited by shares | Live |
| UNITECH SYSTEMS LIMITED | Private company limited by shares | Live |
| UNIVERSAL AUDIO & VIDEO CENTRE LIMITED | Private company limited by shares | Live |
| UNDO LIMITED | Private company limited by shares | Dissolved |
| WELL UNION & UNION LIMITED | Private company limited by shares | Dissolved |
| PACIFIC TOP UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SMART UNIVERSE CONSULTING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| NET UNION TECH LIMITED | Private company limited by shares | Dissolved |
| UNIONTRADE TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC INVESTMENT GROUP (HK) LIMITED | Private company limited by shares | Dissolved |
| UNIGAIN INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SOLUTIONS UNLIMITED LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL E-BUSINESS NETWORK LIMITED | Private company limited by shares | Dissolved |
| CHINA UNITED ONLINE LIMITED | Private company limited by shares | Dissolved |
| UNION MACHINE (HK) LIMITED | Private company limited by shares | Live |
| JOIN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SUMMIT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE AEROSPACE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SYSTEMS ASIA LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL DISPLAY GROUP LIMITED | Private company limited by shares | Live |
| ABLE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SHIPPING LIMITED | Private company limited by shares | Dissolved |
| HAY STAR (UNITED) LIMITED | Private company limited by shares | Dissolved |
| CHINA NATION UNITED & FRIENDLY ASSOCTION LIMITED | Private company limited by shares | Live |
| UNION FIRST CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED SUCCESS PRODUCTS LIMITED | Private company limited by shares | Live |
| UNION (GRAND TECH) ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNITY CHINESE LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNION DATA INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SAMWIN UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNION LINK VIETNAM HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNISOURCE INVESTMENTS GROUP LIMITED | Private company limited by shares | Dissolved |
| UNIONLIGHT LIMITED | Private company limited by shares | Dissolved |
| UNION PERFECT SPORTS LIMITED | Private company limited by shares | Dissolved |
| EXCELLENT UNION LIMITED | Private company limited by shares | Live |
| UNITED ADVERTISING (CHINA) LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION TELECOMMUNICATIONS CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| WEALTH UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED SEA LIMITED | Private company limited by shares | Dissolved |
| T & T UNION LIMITED | Private company limited by shares | Dissolved |
| GLORY UNITED (CHINA) LIMITED | Private company limited by shares | Live |
| UNITED TOP TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED FAME TRADING LIMITED | Private company limited by shares | Dissolved |
| WELL UNION INSURANCE BROKING COMPANY LIMITED | Private company limited by shares | Live |
| UNITED EDUCATION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CIRCLE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CREST LIMITED | Private company limited by shares | Live |
| UNIFIED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITAC H.K. LIMITED | Private company limited by shares | Live |
| UNION TEAM TRADING LIMITED | Private company limited by shares | Dissolved |
| CHINA LAW SERVICE UNION LIMITED | Private company limited by shares | Dissolved |
| CBL UNDERWRITING AGENCIES LIMITED | Private company limited by shares | Dissolved |
| UNIBON INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| RICH UNION (PACIFIC) LIMITED | Private company limited by shares | Dissolved |
| UNION (DIAMOND) JEWELLERY COMPANY LIMITED | Private company limited by shares | Dissolved |
| EAST UNION FINANCE LIMITED | Private company limited by shares | Dissolved |
| TOP UNION TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| HONG KONG EDUCATION UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED SKY TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| MIT UNITECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| CHU KONG AIR-SEA UNION TRANSPORTATION COMPANY LIMITED | Private company limited by shares | Live |
| ZHONG UNION DEVELOPMENT (HK) LIMITED | Private company limited by shares | Dissolved |
| WIDE UNION LIMITED | Private company limited by shares | Live |
| CHAIN UNION LIMITED | Private company limited by shares | Live |
| UNICOMMU ADVERTISING LIMITED | Private company limited by shares | Dissolved |
| JET UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION FAVOUR (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORIA LIMITED | Private company limited by shares | Dissolved |
| EAST UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITOP PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION JOY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITEL LIMITED | Private company limited by shares | Dissolved |
| UNION NATION LIMITED | Private company limited by shares | Dissolved |
| UNIN LIMITED | Private company limited by shares | Dissolved |
| UNION DAY LIMITED | Private company limited by shares | Live |
| UNITED PLUS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE WELL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| AP UNITED RESOURCES LIMITED | Private company limited by shares | Dissolved |
| UNISPHERE NETWORKS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNITY CHOICE LIMITED | Private company limited by shares | Dissolved |
| WING UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SUNPOWER UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL WORLDTRADE LIMITED | Private company limited by shares | Dissolved |