| UNION MARINE PRODUCTS TRADING CO., LIMITED | Private company limited by shares | Live |
| EVER UNISON INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION INTERNATIONAL INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNIFIT INDUSTRIAL SUPPLY CO., LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION PUBLISH GROUP LIMITED | Private company limited by shares | Dissolved |
| GOLD UNION LOGISTICS LIMITED | Private company limited by shares | Live |
| UNION WEALTHY ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION SUN ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNITED ASIA TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNIQUE FORCE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SYSTEM ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION (CHINA) PROCUREMENT LIMITED | Private company limited by shares | Dissolved |
| UN-LS LIMITED | Private company limited by shares | Live |
| UNION-RICH TEXTILES TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL GAS ENGINEERING LIMITED | Private company limited by shares | Live |
| UNION GAINER LIMITED | Private company limited by shares | Dissolved |
| UNION GAINER HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL STUDENT UNION CO., LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE LIGHTING INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| UNILAND (HONG KONG) ENTERPRISE LIMITED | Private company limited by shares | Live |
| UNITEK POWER HK LIMITED | Private company limited by shares | Live |
| UNIVERSE INTERNATIONAL HOLDING GROUP LIMITED | Private company limited by shares | Dissolved |
| UNITED MINERAL METAL LIMITED | Private company limited by shares | Dissolved |
| UNITECH CIRCUIT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION CHANCE (ASIA) LIMITED | Private company limited by shares | Dissolved |
| DRAGON UNITED INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED WEALTHY LIMITED | Private company limited by shares | Live |
| HONGKONG CENTURY UNION EXHIBITION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| T.F.F. INTERNATIONAL UNION GROUP (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNION EXPORT TRADING LIMITED | Private company limited by shares | Dissolved |
| POWER UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| NEW UNION INDUSTRIAL (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION CULT LIMITED | Private company limited by shares | Live |
| UNISAN ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL CONSTRUCTION DESIGN (HONGKONG) LIMITED | Private company limited by shares | Live |
| UNIFUND INTERNATIONAL LIMITED | Private company limited by shares | Live Ceased dormancy on 07-Apr-2011 |
| UNIVERSAL MANAGEMENT EDUCATION LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORIA LIMITED | Private company limited by shares | Dissolved |
| UNION WELL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNITED LINK LIMITED | Private company limited by shares | Dissolved |
| UNION CENTURY LIMITED | Private company limited by shares | Live |
| HONG KONG UNITE-CAPITAL INT'L FINANCIAL LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNINTERRUPTED E (HONGKONG) LIMITED | Private company limited by shares | Dissolved |
| SKY UNION LIMITED | Private company limited by shares | Dissolved |
| UNION CORPORATE SERVICES LIMITED | Private company limited by shares | Live |
| UNION ELITE LIMITED | Private company limited by shares | Dissolved |
| UNITED GRAND LIMITED | Private company limited by shares | Live |
| UNIVERSAL BUS COMPANY LIMITED | Private company limited by shares | Live |
| UNION SHIPPING LIMITED | Private company limited by shares | Live |
| UNIWAY LIMITED | Private company limited by shares | Dissolved |
| UNION TRADE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION METAL LIMITED | Private company limited by shares | Live |
| UNION HEALTH GROUP LIMITED | Private company limited by shares | Dissolved |
| UNI-FAST LIMITED | Private company limited by shares | Dissolved |
| UNIWIN LIMITED | Private company limited by shares | Dissolved |
| UNION METAL PLASTIC FACTORY LIMITED | Private company limited by shares | Live |
| UNITRON ASIA PACIFIC LIMITED | Private company limited by shares | Live |
| UNIVERSAL BRIGHT LIMITED | Private company limited by shares | Dissolved |
| UNION TECHNIC COMPANY LIMITED | Private company limited by shares | Live |
| GRANFORT UNION LIMITED | Private company limited by shares | Dissolved |
| BEST UNION GARMENT LIMITED | Private company limited by shares | Dissolved |
| NEW UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| SINO UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNIROUTE LIMITED | Private company limited by shares | Dissolved |
| CHINA INTERNATIONAL WINE ENTERPRISE UNION LIMITED | Private company limited by shares | Dissolved |
| UNIQUE LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT HONG KONG LIMITED | Private company limited by shares | Live |
| GRAND UNISON LIMITED | Private company limited by shares | Live |
| FORTUNE UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNION WIN INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Live |
| SINCERE UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ROY UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SKY UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIONFORTUNE POWER INDUSTRIES CO., LIMITED | Private company limited by shares | Live |
| SUPER UNION INTERNATIONAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| GLOBAL BUDDHISM COMMERCIAL UNION LIMITED | Private company limited by shares | Dissolved |
| EASTERN UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNISYSTEM INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| United Brave Limited | Private company limited by shares | Live |
| UNION ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION GENESIS INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| USA UNIVERSE GROUP INT'L LIMITED | Private company limited by shares | Live |
| GROUP UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SINGKONG LIMITED | Private company limited by shares | Live |
| GLOBAL UNION PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| UNION HERO ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNIDESIGN FAREAST LIMITED | Private company limited by shares | Live |
| UNITECH HOME APPLIANCES LIMITED | Private company limited by shares | Live |
| BEEPROPOLIS & DIABETES INTERNATIONAL UNION LABORATORY LIMITED | Private company limited by shares | Live |
| XINYI UNDERWEAR CO. LIMITED | Private company limited by shares | Dissolved |
| UNION HEALTH MEDICAL SUPPLY COMPANY LIMITED | Private company limited by shares | Dissolved |
| WORKING UNIT LIMITED | Private company limited by shares | Live |
| UNITED CHINA VENTURE CAPITAL LIMITED | Private company limited by shares | Live |
| TRINITY UNITED LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| SKY UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| WORLD UNION INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |