| UNION GOAL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GENERAL UNITY LIMITED | Private company limited by shares | Live |
| UNIVERSAL CONSTRUCTION COMPANY LIMITED | Private company limited by shares | Live |
| UNICON LIMITED | Private company limited by shares | Dissolved |
| GRAND UNICON LIMITED | Private company limited by shares | Live |
| TOP UNICON LIMITED | Private company limited by shares | Dissolved |
| UNITIC LIMITED | Private company limited by shares | Dissolved |
| UNICON HOLDINGS LIMITED | Private company limited by shares | Live |
| UNITED CARDINAL LIMITED | Private company limited by shares | Live |
| UNION SCORE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIWISE DIGITAL LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| CITY UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SUCCESS UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNION SHINE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD LIMITED | Private company limited by shares | Dissolved |
| UNICHEM CHEMICALS COMPANY LIMITED | Private company limited by shares | Dissolved |
| VICTORY UNITED TRADING LIMITED | Private company limited by shares | Dissolved |
| UNITED HOLIDAYS COMPANY LIMITED | Private company limited by shares | Live |
| UNION TECHNOLOGY (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNI-TECH FINANCIAL SOLUTION LIMITED | Private company limited by shares | Dissolved |
| UNITRON (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION TELECOMMUNICATIONS SERVICES CO. LIMITED | Private company limited by shares | Dissolved |
| EVER UNION LIMITED | Private company limited by shares | Dissolved |
| ON UNION CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| MAY UNION LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION RESTAURANT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| UNIONSTAR INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL (J & K) LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSAL FASHION LIMITED | Private company limited by shares | Dissolved |
| UNILINE LIMITED | Private company limited by shares | Dissolved |
| UNION PERFECT DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED TEAM LIMITED | Private company limited by shares | Live |
| UNION PROPERTY AGENCY LIMITED | Private company limited by shares | Dissolved |
| BEST UNION COURIER COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIWELL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| JET UNITED INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNILOYAL LIMITED | Private company limited by shares | Dissolved |
| UNION TRUMP PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION ENGINEERING (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SHEEN HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION GLASSLAM LIMITED | Private company limited by shares | Dissolved |
| TACT UNION MOTORS LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| WEALTHY UNION LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISE (HK) LIMITED | Private company limited by shares | Dissolved |
| TRUMP UNION LIMITED | Private company limited by shares | Live |
| UNITED CHINA INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION TRUMP INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION WAY TRADING LIMITED | Private company limited by shares | Live |
| CHINA UNION SHIPPING (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION CHINA HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNITED PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| MAX UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNI-FAITH LIMITED | Private company limited by shares | Dissolved |
| UNI-MARK LIMITED | Private company limited by shares | Live |
| UNITED MAX LIMITED | Private company limited by shares | Dissolved |
| UNI-KING LIMITED | Private company limited by shares | Dissolved |
| UNION SOLAR LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNITY LIMITED | Private company limited by shares | Dissolved |
| BIG UNION LIMITED | Private company limited by shares | Dissolved |
| U.I. UNIVERSAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNICROWN LIMITED | Private company limited by shares | Live |
| UNION SUCCESS HOLDINGS LIMITED | Private company limited by shares | Live |
| UNICLEAN COMPANY LIMITED | Private company limited by shares | Dissolved |
| BEST UNITED ENTERPRISES LIMITED | Private company limited by shares | Live |
| FORTUNE UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION FAVOUR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION CHINA LIMITED | Private company limited by shares | Dissolved |
| ARCHITECTURAL SERVICE UNIT, LIMITED | Private company limited by shares | Live |
| UNIVERSE INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNITY LIMITED | Private company limited by shares | Dissolved |
| UNITED SCENE LIMITED | Private company limited by shares | Live |
| UNITED BEST TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TRADING ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNITED SMART LIMITED | Private company limited by shares | Dissolved |
| NEW UNIVERSE FINANCE LIMITED | Private company limited by shares | Dissolved |
| UNION SUN (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNI-YONG ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HONG KONG AIRSOFT SHOOTING UNION LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION TRADING LIMITED | Private company limited by shares | Live |
| UNION WELL (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION FASHIONWEAR LIMITED | Private company limited by shares | Dissolved |
| UNIFY POWER LIMITED | Private company limited by shares | Dissolved |
| UNIONSTAR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| ON UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNIVERSAL MARJU LIMITED | Private company limited by shares | Dissolved |
| GRAND UNITED INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION NET LIMITED | Private company limited by shares | Dissolved |
| UNITED CHINA DEVELOPMENTS LIMITED | Private company limited by shares | Dissolved |
| UNICORP INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNITEAM TRADING LIMITED | Private company limited by shares | Live |
| UNIVERSAL ESTATE AGENCY LIMITED | Private company limited by shares | Live |
| UNION SENSE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CENTRE LIMITED | Private company limited by shares | Live |
| UNITED CAPITAL LIMITED | Private company limited by shares | Live |