| UNION EASE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIONFAME LIMITED | Private company limited by shares | Live |
| UNION PACIFIC ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION GLOBAL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION CHINA LIMITED | Private company limited by shares | Dissolved |
| EVER UNION LIMITED | Private company limited by shares | Dissolved |
| MAX UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| GOLD UNION LIMITED | Private company limited by shares | Dissolved |
| UNION FIELD LIMITED | Private company limited by shares | Dissolved |
| UNION SOURCE LIMITED | Private company limited by shares | Dissolved |
| UNION SYSTEM DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION RIGHT LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL ENTERPRISES (UNION) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION GATE (H.K.) INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIONWAY LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| THRIVING UNION LIMITED | Private company limited by shares | Dissolved |
| NATION UNION IRON & STEEL LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CONTACT LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION COURSE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FULL UNION LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL TRANSPORTATION CO. LIMITED | Private company limited by shares | Dissolved |
| UNION LABEL PRINTING COMPANY LIMITED -THE- | Private company limited by shares | Live |
| SOUTH UNION LIMITED | Private company limited by shares | Live |
| NEW UNION TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| WELL UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| KEY UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC CONSULTANTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| SILVER UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| HUGE UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| V. UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION GAS & ENGINEERING CORPORATION LIMITED -THE- | Private company limited by shares | Live |
| UNION GAS APPLIANCES (CHINA) LIMITED -THE- | Private company limited by shares | Live |
| UNION COMPUTER LABEL FACTORY LIMITED | Private company limited by shares | Live |
| GOOD UNION LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| JET UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| BEST UNION LIMITED | Private company limited by shares | Live |
| EVER UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| ALLIED UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| ALLIED UNION LIMITED | Private company limited by shares | Live |
| ALLIED UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| ALLIED UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION SIGNAL LIMITED | Private company limited by shares | Dissolved |
| HIN UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| CHAT UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MAT UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| CHIEF UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KEEN UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| CHIEF UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| OVERSEAS UNION INTERNATIONAL TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| VANDA UNION INDUSTRIAL (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| LIFE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FORTUNE UNION COMPANY LIMITED | Private company limited by shares | Live |
| UNION GOLD LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT ELECTRONIC LIMITED | Private company limited by shares | Dissolved |
| GOOD UNION MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| OVERSEAS UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| SUN UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION TIME INDUSTRIES LIMITED | Private company limited by shares | Live Commenced dormancy on 30-Mar-2006 |
| WORLD UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| SUPER UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| SUPER UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION DAY LIMITED | Private company limited by shares | Dissolved |
| MARVEL UNION LIMITED | Private company limited by shares | Dissolved |
| OVERSEAS UNION TELECOMMUNICATION COMPANY LIMITED | Private company limited by shares | Live |
| GRAND UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| FULL UNION ENTERPRISES CO. LIMITED | Private company limited by shares | Dissolved |
| UNION KOREA TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION BAMBOO PRODUCTS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WORLD INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION FRIEND (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION FULL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TIME UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| VAST UNION LIMITED | Private company limited by shares | Dissolved |
| UNION WISE LIMITED | Private company limited by shares | Dissolved |
| UNION RIFE HONG KONG LIMITED | Private company limited by shares | Dissolved |
| FORE UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL UNION LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL UNION PROPERTY MANAGEMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH CONSTRUCTION LIMITED | Private company limited by shares | Dissolved |
| UNION SEAFOOD TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MILE UNION LIMITED | Private company limited by shares | Live |
| UNION FULL INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION SINO MEDICINE COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUN UNION FIBRE PAK LIMITED | Private company limited by shares | Live Commenced dormancy on 23-Feb-2009 |
| UNION JONES PROPERTY CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| KING UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| KING UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| KING UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| KING UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| KING UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SPLENDID UNION LIMITED | Private company limited by shares | Live |