| UNION BASE PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION ELECTRONICS (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION RISE MINERALS AND MINING DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| ULTRA UNION (HK) LIMITED | Private company limited by shares | Live |
| SHANDONG UNION TRAILER GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| HUATAI UNION (HK) INVESTMENT SHARES LIMITED | Private company limited by shares | Live |
| BRIGHT UNION ACCOUNTING LIMITED | Private company limited by shares | Live |
| UNION CONTINENTAL LIMITED | Private company limited by shares | Live |
| UNION TIME HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SAILING SHIPPING LIMITED | Private company limited by shares | Live |
| UNION CHIEF COMPANY LIMITED | Private company limited by shares | Dissolved |
| CSJ COMMERCIAL UNION LIMITED | Private company limited by shares | Live |
| AB UNION INTERNATIONAL ENERGY CORP. LIMITED | Private company limited by shares | Dissolved |
| LOYAL UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION BRIGHT KNITTING FACTORY LIMITED | Private company limited by shares | Dissolved |
| DRAGON UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| CLEVER UNION LIMITED | Private company limited by shares | Live |
| UNION LEADING LIMITED | Private company limited by shares | Dissolved |
| UNION STEP LIMITED | Private company limited by shares | Dissolved |
| UNION LUBRICANT INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| UNION PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNION ACCESS LIMITED | Private company limited by shares | Dissolved |
| GOTONE UNION PAY LIMITED | Private company limited by shares | Live |
| UNION SINO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION WIN INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| UNION TREASURE INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION RUBBER INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION EXCHANGE LIMITED | Private company limited by shares | Live |
| Sun Union Watch Limited | Private company limited by shares | Live |
| UNION WORLD TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION TRADE & INVESTMENT CO., LIMITED | Private company limited by shares | Live |
| UNION CONSULTANT CO. LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION GARMENT WORKS LIMITED | Private company limited by shares | Live |
| HK WORLD UNION COMMUNICATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WINNER INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| EAST UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| TRILLION UNION LIMITED | Private company limited by shares | Live |
| SURE UNION LIMITED | Private company limited by shares | Live |
| SPREAD UNION LIMITED | Private company limited by shares | Dissolved |
| UNION ELECTRONICS INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| TOP UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION LEATHER HOLDING LIMITED | Private company limited by shares | Live |
| UNION BRIGHT HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION LINK PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION EXCEL MANAGEMENT LIMITED | Private company limited by shares | Live |
| BRAIN UNION LIMITED | Private company limited by shares | Live |
| UNIONLINK (HONG KONG) INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION GRAND INVESTMENT LIMITED | Private company limited by shares | Live |
| ORIENTAL UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION INTERNATIONAL TRADE PROMOTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION WIN ELECTRONICS INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION GROUP (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION PAY ONLINE SOLOTOUR COMPANY LIMITED | Private company limited by shares | Dissolved |
| Union Scientific Co., Limited | Private company limited by shares | Dissolved |
| HONG KONG HEALTH AND BEAUTY UNION LIMITED | Company limited by guarantee | Live |
| UNION RENHE (H.K.) LIMITED | Private company limited by shares | Dissolved |
| SINO-EUROPEAN (UNION) ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION WIN CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION YOHO LIMITED | Private company limited by shares | Dissolved |
| UNION SKY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| FORTUNE UNION ENTERPRISES (HK) LIMITED | Private company limited by shares | Live |
| HIGHLAND UNION INDUSTRY LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION INC. LIMITED | Private company limited by shares | Dissolved |
| BEAUTY UNION LIMITED | Private company limited by shares | Dissolved |
| NICE UNION LIMITED | Private company limited by shares | Live |
| FAST UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION OCEAN TEXTILE LIMITED | Private company limited by shares | Live |
| HK UNION IMPORT & EXPORT LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION TALENT INVESTMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 10-Feb-2012 |
| SOUTH UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| LUCKY UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| NANTONG UNION FASHION CO., LIMITED | Private company limited by shares | Live |
| CHINA CHEKIANG & COMMERCE UNION LIMITED | Private company limited by shares | Live |
| UNION ON INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION INTELLECTUAL PROPERTY (CHINA) LIMITED | Private company limited by shares | Live |
| DAWN UNION INTERNATIONAL ENERGY GROUP LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| LUCKY UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| OCEAN UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| WISE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION ORIENT LIMITED | Private company limited by shares | Live |
| UNION MAX LIMITED | Private company limited by shares | Dissolved |
| UNION FOOD LICENCE CONSULTANT COMPANY LIMITED | Private company limited by shares | Live |
| GERMANY UNION CAPITAL MANAGEMENT CO., LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION INSPECTION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION RIGHT RESOURCES LIMITED | Private company limited by shares | Live |
| Loyal Union Trading Limited | Private company limited by shares | Live |
| UNION STAR INTERNATIONAL (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION CASTLE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| JC UNION GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| JC UNION MARINE CO., LIMITED | Private company limited by shares | Dissolved |
| FUND UNION LIMITED | Private company limited by shares | Dissolved |
| UNION LAND (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ZHONG CHENG UNION PRIVATE LIMITED | Private company limited by shares | Live |
| UNION FORCES INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |