| HOME UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION TOP LIMITED | Private company limited by shares | Live |
| United Oilfield Supply Limited | Private company limited by shares | Live |
| UNIK DIGITAL TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| UNIVERSAL COLOUR LIMITED | Private company limited by shares | Live |
| SOUTH-CHINA UNIVERSAL FINANCE LIMITED | Private company limited by shares | Live |
| Conveyor Units Limited | Private company limited by shares | Live |
| China Big Medicine United States Medical Anti Management Limited | Private company limited by shares | Live |
| GOOD DAY UNION LIMITED | Private company limited by shares | Live |
| UNION POWER PTY LIMITED | Private company limited by shares | Live |
| UNITED STATES DESAIFU PETROL-CHEMICAL GROUP CO., LIMITED | Private company limited by shares | Live |
| UNICOO LIMITED | Private company limited by shares | Live |
| UNIONCOVER COMPANY LIMITED | Private company limited by shares | Live |
| UNICREDIT DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| UNITY CAPITAL ENERGY LIMITED | Private company limited by shares | Live |
| JH UNIVERSE LIMITED | Private company limited by shares | Live |
| UNILEGEND LIMITED | Private company limited by shares | Live |
| MEGA UNION INVESTMENT HOLDINGS CO., LIMITED | Private company limited by shares | Live Commenced dormancy on 12-May-2016 |
| UNIVERSAL MOVING ENERGY LIMITED | Private company limited by shares | Live |
| HOLD UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| Union Bag Industrial Co., Limited | Private company limited by shares | Live |
| CHINA UNI-PROSPERITY GROUP LIMITED | Private company limited by shares | Live |
| UNIZ (HONG KONG) INVESTMENT COMPANY LIMITED | Private company limited by shares | Live |
| United States Jinman Petrol-Chemical Industry Group Co., Limited | Private company limited by shares | Live |
| China Cardspay Union Network Co. Limited | Private company limited by shares | Live |
| Union Express Aviation Limited | Private company limited by shares | Live |
| Unination Limited | Private company limited by shares | Live |
| Champion Unity Limited | Private company limited by shares | Live |
| UNI-WELL ELECTRONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Impulse Universal Trade Co., Limited | Private company limited by shares | Live |
| HK YOUNG&MIDDLE-AGED BUSINESS UNION OF CHINA, LIMITED | Private company limited by shares | Live |
| UNION CHANGJIANG TRADING (HK) LIMITED | Private company limited by shares | Live |
| CHINA UNITED TELECOMMUNICATIONS LIMITED | Private company limited by shares | Live |
| United Purchasing Associates, Limited | Private company limited by shares | Live |
| UNION CATERING CONCEPTS LIMITED | Private company limited by shares | Live |
| UNISON (INT) FINANCE HOLDINGS CO., LIMITED | Private company limited by shares | Live |
| Ur Universal Fashion Limited | Private company limited by shares | Live |
| Amity University Limited | Company limited by guarantee | Live |
| HEZONG UNION INT'L GROUP LIMITED | Private company limited by shares | Live |
| Union Dragon Design & Contracting Company Limited | Private company limited by shares | Live |
| New Unicom Technology Limited | Private company limited by shares | Live |
| RUN UNISON INTERNATIONAL TRADING CO., LIMITED | Private company limited by shares | Live |
| UNION WORLD MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNIVERSE H.W LIMITED | Private company limited by shares | Live |
| UNIVERSE INT'L GROUP LIMITED | Private company limited by shares | Live |
| ASIA CHEER UNION LIMITED | Company limited by guarantee | Live |
| UNITYCITY LIMITED | Private company limited by shares | Dissolved |
| China Red Wisdom Business Union Limited | Private company limited by shares | Live |
| UNITYMALL LIMITED | Private company limited by shares | Dissolved |
| UNITYNET CORPORATION LIMITED | Private company limited by shares | Live |
| SILVER UNION AUCTION LIMITED | Private company limited by shares | Live |
| SILVER UNION MUSEUM LIMITED | Private company limited by shares | Live |
| GUAN GONG CULTURE WORLD UNION LIMITED | Company limited by guarantee | Live |
| UNIVERSAL INTERNATIONAL UNION LOGISTICS LIMITED | Private company limited by shares | Live |
| CHINA AIRLINE UNITED PATROLEUM & CHEMICALS CO., LIMITED | Private company limited by shares | Live |
| GOLD UNION STEEL LIMITED | Private company limited by shares | Live |
| UNIWOW LIMITED | Private company limited by shares | Live |
| HK Union Fortune International Co., Limited | Private company limited by shares | Live |
| Bravo Union Limited | Private company limited by shares | Live |
| UNION WEALTHY INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION POWER ENTERPRISE LIMITED | Private company limited by shares | Live |
| SEA DWELLER UNION COMPANY LIMITED | Company limited by guarantee | Dissolved |
| Union Motors Trading Limited | Private company limited by shares | Live |
| DELUXE UNION LIMITED | Private company limited by shares | Live |
| China Culture & Arts Union Limited | Private company limited by shares | Live |
| UNION GROUP GLOBAL TRADING CO., LIMITED | Private company limited by shares | Live |
| SHSH UNIVERSAL LIMITED | Private company limited by shares | Live |
| Unique Education Limited | Private company limited by shares | Live |
| SINO ENTERPRISER UNION INTERNATIONAL WELLNESS & HOLIDAY STOCK LIMITED | Private company limited by shares | Live |
| TANWEER UNITED LIMITED | Private company limited by shares | Live |
| UNIQUE COLLECTIONS LIMITED | Private company limited by shares | Live |
| Yacht Union Network International Share Limited | Private company limited by shares | Live |
| UNIO Limited | Private company limited by shares | Live |
| UNIQUO PACIFIC LIMITED | Private company limited by shares | Live |
| CHINA ENTERPRISE UNION GROUP LIMITED | Private company limited by shares | Live |
| SG UNIVERSAL TRADING LIMITED | Private company limited by shares | Live |
| Uninal Group Limited | Private company limited by shares | Live |
| Gold Universe Consulting Limited | Private company limited by shares | Live |
| CHINA CAR UNION ASSOCIATION CO., LIMITED | Private company limited by shares | Live |
| UNION WISE MATERIALS (HK) LIMITED | Private company limited by shares | Live |
| STARS UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| CHILDREN AND PARENTS UNION LIMITED | Company limited by guarantee | Live |
| BEST UNION TRAVEL (HK) LIMITED | Private company limited by shares | Live |
| GOLF UNITED LIMITED | Private company limited by shares | Live |
| UNION MARK CORPORATION LIMITED | Private company limited by shares | Live |
| HK JST UNITED CO., LIMITED | Private company limited by shares | Live |
| Universal Smart Solutions Limited | Private company limited by shares | Live |
| TONG TRADING UNION LIMITED | Private company limited by shares | Live |
| Hong Kong Union Pay Service Company Limited | Private company limited by shares | Live |
| UNITED RISING LIMITED | Private company limited by shares | Live |
| UNION RAMON COMPANY LIMITED | Private company limited by shares | Live |
| China Tridacna Art Boutique Union Association Limited | Private company limited by shares | Live |
| WORLD CULTURES INDUSTRY EXCHANGE UNION LIMITED | Private company limited by shares | Live |
| CHINA UNIMEN ENTERPRISE LIMITED | Private company limited by shares | Live |
| International Union of Food Development Co., Limited | Private company limited by shares | Live |
| UNION SNK & CHINA TRADING LIMITED | Private company limited by shares | Live |
| UNIVERSAL SUCCESS ENTERPRISE LIMITED | Private company limited by shares | Live |
| GRAND UNION INTERNATIONAL INDUSTRIAL (HK) LIMITED | Private company limited by shares | Live |
| HK WIKENTER UNIFORM CO., LIMITED | Private company limited by shares | Live |
| CHINA COACH UNION CO., LIMITED | Private company limited by shares | Live |