| UNION STONE LIMITED | Private company limited by shares | Live |
| TOP UNION INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Live |
| TOP UNION HONG KONG CORP. LIMITED | Private company limited by shares | Live |
| TOP UNION FAR EAST INVESTMENTS LIMITED | Private company limited by shares | Live |
| TOP ELECTRONICS UNION LIMITED | Private company limited by shares | Live |
| UNION GOOD INDUSTRIAL LIMITED | Private company limited by shares | Live |
| GOOD UNION ELECTRONIC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION ELITE CORPORATION LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| KING UNION FANCY YARN CO., LIMITED | Private company limited by shares | Live |
| SMART UNION ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| UNION SUCCESS CORPORATION LIMITED | Private company limited by shares | Live |
| Union of Royal & Art Wineries Limited | Private company limited by shares | Live |
| Hong Kong Faithful Union Logistics Limited | Private company limited by shares | Dissolved |
| UNION PACIFIC INTERNATIONAL (HK) CO., LIMITED | Private company limited by shares | Live |
| UNION WISE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HUATAI UNION INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| UNION BRIGHT LIGHTING CO., LIMITED | Private company limited by shares | Live |
| Union Agriculture Company Limited | Private company limited by shares | Live |
| GREAT UNION PROPERTY LIMITED | Private company limited by shares | Dissolved |
| GOOD UNION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| Oriental Union Metal Limited | Private company limited by shares | Live |
| GLOBAL UNION MORTGAGE SERVICES LIMITED | Private company limited by shares | Live |
| UNION (LL) COMPANY LIMITED | Private company limited by shares | Live |
| SILVER UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION RISE INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNION MEGA TRADING INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION EMPIRE LIMITED | Private company limited by shares | Live |
| UNION STAR (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION STAR MANAGEMENT LIMITED | Private company limited by shares | Live |
| HK UNION ONE IMPORT AND EXPORT CO., LIMITED | Private company limited by shares | Dissolved |
| LAND UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Dyna Union Ironwear & Construction Limited | Private company limited by shares | Dissolved |
| UNION CENTURY INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| Union Resources Development Limited | Private company limited by shares | Live |
| UNION OF CHINA CORPORATE UNIVERSITY CO., LIMITED -THE- | Private company limited by shares | Live |
| HONG KONG UNION LOYALTY COMPANY LIMITED | Private company limited by shares | Live |
| CHINA PROMINENT FLBZ UNION LIMITED | Private company limited by shares | Live |
| Foundry Trade Union Limited | Private company limited by shares | Live |
| UNION GOOD INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Live |
| Eastern Union Industrial Group Limited | Private company limited by shares | Dissolved |
| Brightness Union International Holdings Limited | Private company limited by shares | Dissolved |
| New Century Union International Co., Limited | Private company limited by shares | Dissolved |
| Union Rich Worldside International Trading Limited | Private company limited by shares | Dissolved |
| Unique Union Chemical Trading (HK) Limited | Private company limited by shares | Dissolved |
| UNION GROWTH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GALLERY LIMITED | Private company limited by shares | Live |
| RAISE UNION LIMITED | Private company limited by shares | Live |
| WELLY UNION LIMITED | Private company limited by shares | Live |
| Union Bridge Capital (HK) Limited | Private company limited by shares | Live |
| DI LONG EARTHWORM INDUSTRY UNION CHINA LIMITED | Private company limited by shares | Live |
| UNION FIRST DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION VISION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| DONG TAI UNION TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| TOP UNION DISPLAY CO., LIMITED | Private company limited by shares | Live |
| ASIA UNION ACCOUNTING COMPANY LIMITED | Private company limited by shares | Live |
| ASEAN MONEY UNION LIMITED | Private company limited by shares | Live |
| Union Education Holding Limited | Private company limited by shares | Live |
| UNION GOLD CORPORATION LIMITED | Private company limited by shares | Live |
| STAR UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION LAND ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION GOOD TRADING LIMITED | Private company limited by shares | Live |
| JOY UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| MEGA UNION PROPERTIES LIMITED | Private company limited by shares | Live |
| Union Optoelectronics Technology Limited | Private company limited by shares | Live |
| UNION KING CORPORATION LIMITED | Private company limited by shares | Live |
| UNION COSMOS WINE MERCHANT LIMITED | Private company limited by shares | Live |
| UNION FASHION EXPAND (HK) COMPANY LIMITED | Private company limited by shares | Live |
| UNION YIELD LIMITED | Private company limited by shares | Live |
| HK WO LONG INT'L UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION INC. LIMITED | Private company limited by shares | Live |
| UNION WORLD INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION FIELD INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| FIRST UNION PROPERTIES LIMITED | Private company limited by shares | Live |
| TOPPY UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION JOIN LIMITED | Private company limited by shares | Live |
| CHINA YIJIAXING UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| WELL UNION LIMITED | Private company limited by shares | Live |
| SHENZHEN UNION TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UNION LUCK DEVELOPMENT LIMITED | Private company limited by shares | Live |
| Hong Kong Wah Union Trade Co., Limited | Private company limited by shares | Live |
| MEI MENG INT'L UNION TRADING LIMITED | Private company limited by shares | Live |
| JOINT UNION INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| MA YA INT'L UNION TRADING LIMITED | Private company limited by shares | Live |
| SHAN YUAN INT'L UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION FAVOR INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| UNIONLEDS LIGHTING HK LIMITED | Private company limited by shares | Live |
| UNION MEGA CORPORATION LIMITED | Private company limited by shares | Dissolved |
| ULTRA UNION LIMITED | Private company limited by shares | Live |
| MAX UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TONGXING UNION GROUP HOLDINGS LIMITED | Private company limited by shares | Live |
| SMART UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| MIXCO UNION LIMITED | Private company limited by shares | Live |
| Sino Core Union Limited | Private company limited by shares | Live |
| GrandChina Union Group Co., Limited | Private company limited by shares | Live |
| UNION PROFIT TRANSPORTATION SERVICES COMPANY LIMITED | Private company limited by shares | Dissolved |
| USA UNION LANE GROUP LIMITED | Private company limited by shares | Live |
| UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| HONOUR UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION CORPORATION LIMITED | Private company limited by shares | Live |