| INTERNATIONAL WUDAO UNION DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Live |
| UNION UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION FINE (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| UNION BASE (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION GLOBAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| PEACE UNION LIMITED | Private company limited by shares | Dissolved |
| PEACE UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION WHACKERS LIMITED | Private company limited by shares | Live |
| UNION RICHEST LIMITED | Private company limited by shares | Live |
| UNION PAPER COMPANY LIMITED | Private company limited by shares | Dissolved |
| LINK UNION (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| WINNER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SHEEN ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION TECH LIMITED | Private company limited by shares | Dissolved |
| UNION PRAISE LIMITED | Private company limited by shares | Dissolved |
| UNION TRADERS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| 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 |
| UNION CHEMICALS MATERIAL LIMITED | Private company limited by shares | Dissolved |
| DIGITAL UNION LIMITED | Private company limited by shares | Dissolved |
| EVER UNION TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| WELL UNION & UNION LIMITED | Private company limited by shares | Dissolved |
| PACIFIC TOP UNION ENTERPRISES 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 |
| 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 |
| ABLE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION FIRST CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION (GRAND TECH) ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION DATA INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION LINK VIETNAM HOLDINGS 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 |
| PACIFIC UNION TELECOMMUNICATIONS CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| WEALTH UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| T & T UNION LIMITED | Private company limited by shares | Dissolved |
| WELL UNION INSURANCE BROKING COMPANY LIMITED | Private company limited by shares | Live |
| UNION CREST 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 |
| 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 |
| 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 |
| 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 |
| UNION JOY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION NATION LIMITED | Private company limited by shares | Dissolved |
| UNION DAY LIMITED | Private company limited by shares | Live |
| ETERNAL UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| WING UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION REFRIGERATION ENGINEERING LIMITED | Private company limited by shares | Live |
| LUCKY UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION GUIDE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CYBER UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| KAM HOI UNION LIMITED | Private company limited by shares | Dissolved |
| UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| ABLE UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION AVIATION SERVICE LIMITED | Private company limited by shares | Dissolved |
| QUALITY UNION ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL FREIGHT FORWARDING CO., LIMITED | Private company limited by shares | Live |
| UNION CAPITAL AND HOLDINGS LIMITED | Private company limited by shares | Live Commenced dormancy on 03-Apr-2003 |
| ALLIANCE UNION LIMITED | Private company limited by shares | Live |
| FRED'S UNION INTERNATIONAL TRADERS LIMITED | Private company limited by shares | Dissolved |
| UNION RICH LIMITED | Private company limited by shares | Live |
| UNION LINK INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION KING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION EXPRESS INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| EXCEL UNION (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION FAT ENGINEERING (HONG KONG) LIMITED | Private company limited by shares | Live |
| STAR UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION INVESTMENT GROUP (HK) LIMITED | Private company limited by shares | Live |
| UNION ORIENTAL CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| HARVEST UNION LIMITED | Private company limited by shares | Live |
| UNION EXCEL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SHENZHEN PROPERTY UNION LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION MARITIME LIMITED | Private company limited by shares | Dissolved |
| UNION INKS (HK) COMPANY, LIMITED | Private company limited by shares | Live |
| TECHSON UNION LIMITED | Private company limited by shares | Dissolved |
| UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIONLINK ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION GIANT INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| WISE UNION LIMITED | Private company limited by shares | Dissolved |