| 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 |
| CRANBROOK UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| 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 |
| UniPayExpress Limited | Private company limited by shares | Live |
| Union Rich Worldside International Trading Limited | Private company limited by shares | Dissolved |
| RS UNIVERSAL LIMITED | Private company limited by shares | Live |
| Unique Union Chemical Trading (HK) Limited | Private company limited by shares | Dissolved |
| TALENT UNITY LIMITED | Private company limited by shares | Live |
| UNION GROWTH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GALLERY LIMITED | Private company limited by shares | Live |
| ESSENTIAL UNIVERSAL LIMITED | Private company limited by shares | Live |
| EXCELLENCE UNIVERSAL 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 |
| 3Y Universal Company Limited | Private company limited by shares | Live |
| RICH UNIVERSE 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 |
| ASIAN UNITED BROADCASTING LIMITED | Private company limited by shares | Live |
| ETI - Universal Medical Co. Limited | Private company limited by shares | Live |
| UNITED PROPERTIES INVESTMENT 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 |
| WINNING UNITED LIMITED | Private company limited by shares | Live |
| UNIVERSAL BRAND LIMITED | Private company limited by shares | Live |
| Universal English Education Limited | Private company limited by shares | Live |
| UNIWAY INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| China Unison Property Consultancy Limited | Private company limited by shares | Dissolved |
| ASEAN MONEY UNION LIMITED | Private company limited by shares | Live |
| UNIQUE MEDIC COMPANY LIMITED | Private company limited by shares | Live |
| Union Education Holding Limited | Private company limited by shares | Live |
| UNIX OCEAN LIMITED | Private company limited by shares | Live |
| ELITE UNITED LIMITED | Private company limited by shares | Live |
| UNITED EXIM LIMITED | Private company limited by shares | Live |
| UNION GOLD CORPORATION LIMITED | Private company limited by shares | Live |
| Unisoft Limited | Private company limited by shares | Live |
| HONG KONG UNIVERSE ENTERTAINMENT MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| STAR UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| STAR UNITED ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION LAND ENTERPRISES LIMITED | Private company limited by shares | Live |
| ME Universal 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 |
| Wisdom Universal Limited | Private company limited by shares | Live |
| CONCORD UNIVERSE INDUSTRIAL 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 |
| UNIVERSAL GROUP PROPERTY LIMITED | Private company limited by shares | Live |
| UNIQUE CHILDREN WEARS HK LIMITED | Private company limited by shares | Dissolved |
| UNION FASHION EXPAND (HK) COMPANY LIMITED | Private company limited by shares | Live |
| UNION YIELD LIMITED | Private company limited by shares | Live |
| Shaw Modern Art University Limited | Private company limited by shares | Live |
| UNICHIP INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| HK WO LONG INT'L UNION TRADING LIMITED | Private company limited by shares | Live |
| UNITED TECH INVESTMENT HOLDING 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 |
| VICTORY UNIVERSAL 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 |
| UNITECH ADVANCE (HK) LIMITED | Private company limited by shares | Live |
| UNIFIED INDUSTRIAL 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 |
| Universal Scientific Limited | Private company limited by shares | Live |
| UNIBRIGHT ASIA 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 |
| UNIQUE TALENT INVESTMENTS LIMITED | Private company limited by shares | Live |
| MAX UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNICARGO SHIPPING LIMITED | Private company limited by shares | Live |
| TONGXING UNION GROUP HOLDINGS LIMITED | Private company limited by shares | Live |
| UNIQUE ONE IMP&EXP CO., LIMITED | Private company limited by shares | Dissolved |
| UNITED ONE ASIA COMPANY LIMITED | Private company limited by shares | Dissolved |
| T&C UNITED CO., LIMITED | Private company limited by shares | Live |
| UNITED LUCK ASIA LIMITED | Private company limited by shares | Dissolved |