| 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 |
| UNAFORTE 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 |
| UNCLE JOE ENTERPRISE LIMITED | Private company limited by shares | Live |
| 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 |
| Unscramble HK Limited | Private company limited by shares | Live |
| 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 |
| 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 |
| UniPhi (HK) 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 |
| LOGIS UNITRANS (CHINA) LIMITED | Private company limited by shares | Live |
| LEARNING UNLIMITED LIMITED | Private company limited by shares | Live |
| United Win Technology Limited | Private company limited by shares | Dissolved |
| USA UNION LANE GROUP LIMITED | Private company limited by shares | Live |
| Universality 9 Co., LIMITED | Private company limited by shares | Live |
| UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| CHINA SHIYOU JUE UNIFIED NATURAL SHARE CO., LIMITED | Private company limited by shares | Dissolved |
| HONOUR UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION CORPORATION LIMITED | Private company limited by shares | Live |
| FIX UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIQUEPRO HI-TECH CO., LIMITED | Private company limited by shares | Dissolved |
| UNION TRADING INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| BEST UNION (HK) INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| UNION CHEER LIMITED | Private company limited by shares | Live |
| Union Power Sports Centre Limited | Private company limited by shares | Live |
| SHENZHEN L&U UNDERWEAR CO., LIMITED | Private company limited by shares | Dissolved |
| UNION ACT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| DRAGON UNITY INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION CHAMPION INTERNATIONAL DEVELOP LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION RICH COMPANY LIMITED | Private company limited by shares | Live |
| UNITED ARTISTS LIMITED | Private company limited by shares | Live |
| UNITED NATIONS EDUCATION INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Live |
| UNITED ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| Universal Logistic Investment Limited | Private company limited by shares | Live |
| Innovation Commonweal Union Limited | Private company limited by shares | Live |
| CORPORATE UNIVERSAL LIMITED | Private company limited by shares | Live |
| ORIENTAL UNITED ENTERPRISE LIMITED | Private company limited by shares | Live |
| ASIAN HAIRDRESSING AND BEAUTY COSMETIC UNION LIMITED | Private company limited by shares | Dissolved |
| SMART UNION MOTORS (ASIA) COMPANY LIMITED | Private company limited by shares | Live |