| UNION PLAN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITECH OFFICE SUPPLIES COMPANY LIMITED | Private company limited by shares | Live |
| UNION FORCE TRADING LIMITED | Private company limited by shares | Dissolved |
| ORIENT UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| DELTA UNITED LIMITED | Private company limited by shares | Live |
| DELTA UNITED INVESTMENT LIMITED | Private company limited by shares | Live |
| DELTA UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION NATION HOLDINGS LIMITED | Private company limited by shares | Live |
| DELTA UNION PROPERTIES LIMITED | Private company limited by shares | Live |
| TREASURE UNITY LIMITED | Private company limited by shares | Live |
| ASIA UNITED ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION TRADING (CHINA) LIMITED | Private company limited by shares | Live |
| UNITED TOURS LIMITED | Private company limited by shares | Live |
| HONGI UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION KING FAR EAST LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION BOHAI INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION LINK (ASIA) LIMITED | Private company limited by shares | Dissolved |
| CHARTER UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SILVER UNITED LIMITED | Private company limited by shares | Dissolved |
| FORD UNITY LIMITED | Private company limited by shares | Dissolved |
| ETERNAL UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| WELL UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| ALPHA UNION LIMITED | Private company limited by shares | Dissolved |
| ALL UNION LIMITED | Private company limited by shares | Dissolved |
| UNITED-ASIA REALTY LIMITED | Private company limited by shares | Dissolved |
| UNITY INSURANCE UNDERWRITING AGENCY LIMITED | Private company limited by shares | Live |
| UNION MASTER INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GRAND CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNIYEAR LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE JEWELLERY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITECH ENGINEERING CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNIWEAL LIMITED | Private company limited by shares | Dissolved |
| E.A. UNITED INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| E.A. UNITED ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED TOP (ASIA) LIMITED | Private company limited by shares | Dissolved |
| ITAI UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION MIND LIMITED | Private company limited by shares | Live |
| UNION FOCUS INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CREATIVE INTERNATIONAL (HK) LIMITED | Private company limited by shares | Live |
| UNION PROFIT ASIA LIMITED | Private company limited by shares | Dissolved |
| DU'S (H.K.) UNION EXPLOIT CO., LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL RELAYS & CONTROLS LIMITED | Private company limited by shares | Live |
| UNION WISE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| T & C UNITED ENTERPRISES COMPANY LIMITED | Private company limited by shares | Live |
| UNIVERSAL EFFORT LIMITED | Private company limited by shares | Dissolved |
| UNITED AIM LIMITED | Private company limited by shares | Live |
| UNITECH CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED ELITE LIMITED | Private company limited by shares | Live |
| UNIVERSAL DRAGON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION LIMITED | Private company limited by shares | Dissolved |
| GRAND UNIVERSE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CENTRAL UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| NATURAL UNION LIMITED | Private company limited by shares | Dissolved |
| CASTLE CHINESE UNION TRADE DEVELOPMENT LIMITED | Private company limited by shares | Live |
| TARGET UNITED LIMITED | Private company limited by shares | Dissolved |
| UNION HONOUR INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNITED PLASTIC & METAL MFY LIMITED | Private company limited by shares | Live |
| UNICA INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| FRIENDS UNLIMITED LIMITED | Company limited by guarantee | Dissolved |
| UNISOURCES HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION STATES FINANCE LIMITED | Private company limited by shares | Dissolved |
| GREEN UNIVERSE TECHNOLOGY & ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION STATION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION INDUSTRIAL (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| SUNLIX UNIVERSAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| KEEN UNISON (CHINA) LIMITED | Private company limited by shares | Live |
| UNITED WORLD CHINESE ASSOCIATION USA COMMUNICATION AND ENERGY (HOLDINGS) INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| BEST UNITED LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TRADER INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| (H.K.) POST UNION PUBLISH CO., LIMITED | Private company limited by shares | Dissolved |
| UNION FORCE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNI-MART LIMITED | Private company limited by shares | Dissolved |
| UNION SENSE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION JET INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNITECH LIMITED | Private company limited by shares | Dissolved |
| UNION SENSE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| H.T.C. CERAMIC UNION LIMITED | Private company limited by shares | Dissolved |
| RICH UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION PLACE LIMITED | Private company limited by shares | Dissolved |
| EVER UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ALL UNION (INTERNATIONAL) LIMITED | Private company limited by shares | Live |
| UNLIMITED SPACE COMPANY LIMITED | Private company limited by shares | Dissolved |
| EVER UNION INTERNATIONAL HOTEL MANAGEMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED 1 LIMITED | Private company limited by shares | Dissolved |
| JOY UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION MATE ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| RK UNIVERSAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION ASIA PACIFIC EXPRESS LIMITED | Private company limited by shares | Dissolved |
| TRINITY UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION LAB. SUPPLIES LIMITED | Private company limited by shares | Dissolved |
| DIAMOND UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| CENTRAL UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| EASTERN UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNITY HEALTH-CARE COMPANY LIMITED | Private company limited by shares | Live |
| UNION TRADERS (CHINA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION BRAVE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| JOY UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| NEW CREATION UNIVERSAL COMPANY LIMITED | Private company limited by shares | Dissolved |