| UNION INTERNATIONAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| HK UNION CHEM GROUP LIMITED | Private company limited by shares | Dissolved |
| J. T. UNION COMPANY LIMITED | Private company limited by shares | Live |
| WISE UNION CONSTRUCTION LIMITED | Private company limited by shares | Live |
| UNION BRIGHT ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION HEALTHCARE LIMITED | Private company limited by shares | Live |
| UNION FAIR CONTRACTING LIMITED | Private company limited by shares | Dissolved |
| UNION BANDY LIMITED | Private company limited by shares | Live |
| UNION FUBON (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION MONEY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION LEGEND INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION INVESTMENT CONSULTANT LIMITED | Private company limited by shares | Dissolved |
| UNION DEVELOPMENT INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION SUCCESS INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION GLOBAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION WAY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION STAR SWIMMING CLUB LIMITED | Private company limited by shares | Dissolved |
| UNION LEVELING COMPANY LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL INVESTMENT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| WEALTH UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SKY UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| TOP UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| WISE UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION TOUGH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION INVESTMENT ENTERPRISE LIMITED | Private company limited by shares | Live Commenced dormancy on 03-Sep-2009 |
| FIRST UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION STABLE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION LONG INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| EASTERN UNION FINANCIAL LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION GARDEN LIMITED | Private company limited by shares | Live |
| JOYCE UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| FRANCE UNION VALENTINO INT'L GROUP LIMITED | Private company limited by shares | Dissolved |
| WIN UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| HONG KONG COTTON INDUSTRY UNION LIMITED | Private company limited by shares | Live |
| UNION EDUCATION INDEX LIMITED | Private company limited by shares | Live |
| UNION FRIEND SHOES HOLDING LIMITED | Private company limited by shares | Dissolved |
| TIME UNION TRADING LIMITED | Private company limited by shares | Live |
| TIME UNION ASIA FINANCIAL SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNION JOY LIMITED | Private company limited by shares | Live |
| UNION FORD INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION TIME INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION LINK INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION TECHNOLOGY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SKY UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CN UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL (CHINA) CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION PLANNING COMPANY LIMITED | Private company limited by shares | Live |
| SKY UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION GARMENT LIMITED | Private company limited by shares | Dissolved |
| HK UNION TRADING LIMITED | Private company limited by shares | Live |
| STRONG UNION INTERNATIONAL (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION TEAM INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HANSAM UNION ENTERPRISES ACOUSTICS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CARE UNION LIMITED | Private company limited by shares | Dissolved |
| SKY UNION ASIA LIMITED | Private company limited by shares | Dissolved |
| EXCEL UNION (CHINA) LIMITED | Private company limited by shares | Live |
| UNION GROWTH LIMITED | Private company limited by shares | Dissolved |
| UNION SOUND LIMITED | Private company limited by shares | Live |
| UNION DEVELOPER COMPANY LIMITED | Private company limited by shares | Live |
| GRAND UNION (HK) INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION CARBON GROUP (HK) CO. LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| L & L UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNION CONTINENTAL HONG KONG LIMITED | Private company limited by shares | Live |
| CHAMP UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CHAMP UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE MATERIALS SUPPLIES LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION FRIENDS IMPORT AND EXPORT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION GROW LIMITED | Private company limited by shares | Live |
| TOP UNION INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION LIMITED | Private company limited by shares | Live |
| UNION TEXTILE OF CHINA (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION REGENT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| BEST UNION INTERNATIONAL INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| USA UNION AUTO PARTS GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION STAR INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNION SHEEN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION BEST ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WIN UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION BRIDGE CHINA LIMITED | Private company limited by shares | Live |
| UNION (H.K.) CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| JOIN UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| FORTUNE UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION FORCE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION TEAM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION FAREAST LIMITED | Private company limited by shares | Dissolved |
| UNION CONSTRUCTION & ENGINEERING CO. LIMITED | Private company limited by shares | Live |
| UNION DEVELOPMENT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION WEALTHY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION PUBLIC CARS MANAGEMENT & INVESTMENT LIMITED | Private company limited by shares | Live |
| INTERNATIONAL MANAGERS UNION LIMITED | Private company limited by shares | Dissolved |
| UNION FINANCE LIMITED | Private company limited by shares | Dissolved |
| LUCKY UNION INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| HEART UNION TRANSPORTATION LIMITED | Private company limited by shares | Live |