| EAST UNION CONSTRUCTION FIRM LIMITED | Private company limited by shares | Live |
| UNIWELL ELECTRONICS (INTERNATIONAL) CO., LIMITED | Private company limited by shares | Dissolved |
| CY UNIVERSAL TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| RICHLY (UNION) ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MAGNETISM LIMITED | Private company limited by shares | Dissolved |
| SEA UNION TELECOM LIMITED | Private company limited by shares | Dissolved |
| UNION SUN INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| RIGHT UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| HERO UNION LIMITED | Private company limited by shares | Dissolved |
| UNIC TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| ROOM UNION LIMITED | Private company limited by shares | Dissolved |
| UNION EAST (H.K.) LIMITED | Private company limited by shares | Live |
| UNITED STAR MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITECH ELECTRONIC TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Dissolved |
| GARUDA UNION GROUP HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ITALY UNION KANGAROO (H.K.) INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION BRIDGE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KONG SHUM UNION (CHINA) LIMITED | Private company limited by shares | Live |
| UNITED MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| UNION WISE APPLIED TECHNOLOGY HOLDING LIMITED | Private company limited by shares | Dissolved |
| FEI YEUNG UNION (HOLDINGS) LIMITED | Private company limited by shares | Live |
| UNI-WAY ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION CHEMICAL INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL PIGEON LIMITED | Private company limited by shares | Dissolved |
| NAM SHUM (UNIVERSAL) COMPANY LIMITED | Private company limited by shares | Live |
| UNION GRAND CARGO (HK) COMPANY LIMITED | Private company limited by shares | Live |
| KENT UNION LIMITED | Private company limited by shares | Dissolved |
| KONG HO UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNITED DISTRIBUTORS (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNIDRAGON COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED SKY ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION ENTERPRISE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WING TAI UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| ASIAN UNITED LIMITED | Private company limited by shares | Dissolved |
| RED UNIVERSE MACHINERY CO., LIMITED | Private company limited by shares | Dissolved |
| SAM UNIVERSE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL ENTERPRISE GROUP LIMITED | Private company limited by shares | Live |
| UNION TOUGH ADVERTISEMENT LIMITED | Private company limited by shares | Live |
| AMERICA EURO UNION GROUP HONGKONG LIMITED | Private company limited by shares | Dissolved |
| UNITED PORT LIMITED | Private company limited by shares | Dissolved |
| UNION ARTIFICIAL FLOWER CO., LIMITED | Private company limited by shares | Dissolved |
| UNION PARK ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION AIR CHARTER FLIGHTS COMPANY LIMITED | Private company limited by shares | Live |
| UNION EAST CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL BASIC LIMITED | Private company limited by shares | Dissolved |
| RA UNITED TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION STAR ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL QUALITY MANAGEMENT ASSOCIATION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION CONSTRUCTION WORK LIMITED | Private company limited by shares | Dissolved |
| UNION HOLDING PROPERTY LIMITED | Private company limited by shares | Live |
| UNIQUE SERVICE (ASIA) LIMITED | Private company limited by shares | Live |
| UNION RICH (HONG KONG) SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| MATEGO UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNIWELL LIMITED | Private company limited by shares | Dissolved |
| UNIWELL CENTURY LIMITED | Private company limited by shares | Live |
| EASTERN UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| L & C UNITED CHEMISTRY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNISPACE ENTERPRISE COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW UNION GROUP INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| EVERWIN UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| MID-ASIA UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| PEACE UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNI-TALENT INTERNATIONAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WIN UNION TRADING LIMITED | Private company limited by shares | Live Commenced dormancy on 30-Nov-2012 |
| UNIPHARM INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| TOP UNIVERSAL MANAGEMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL ENTERTAINMENT (ASIA) LIMITED | Private company limited by shares | Dissolved |
| ALLIED UNION CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION INTERNATIONAL ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIBRIDGES LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL 2000 WATERPROOF ENGINEERING CO., LIMITED | Private company limited by shares | Dissolved |
| UNI-COSMOS (CHINA) COMPANY LIMITED | Private company limited by shares | Dissolved |
| VICTORY UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| HK UNION CHEM GROUP LIMITED | Private company limited by shares | Dissolved |
| RS UNITED (GROUP) LIMITED | Private company limited by shares | Live |
| UNIQUE DESIGN LIMITED | Private company limited by shares | Dissolved |
| J. T. UNION COMPANY LIMITED | Private company limited by shares | Live |
| UNISON SEA & AIR (H.K.) CO. LIMITED | Private company limited by shares | Dissolved |
| WISE UNION CONSTRUCTION LIMITED | Private company limited by shares | Live |
| UNITON LIMITED | Private company limited by shares | Dissolved |
| UNION BRIGHT ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNISON ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| SERVANTS IN UNITY LIMITED | Company limited by guarantee | Live |
| UNI-WEALTH TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| UNI-WEALTH GARMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION HEALTHCARE LIMITED | Private company limited by shares | Live |
| MISS UNIVERSE, CHINA ORGANIZATION LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION FAIR CONTRACTING LIMITED | Private company limited by shares | Dissolved |
| UNION BANDY LIMITED | Private company limited by shares | Live |
| UNITED CARE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNICHEM GROUP LIMITED | Private company limited by shares | Dissolved |
| 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 |
| UNIVERSAL TECHNOLOGIES (HONG KONG) LIMITED | Private company limited by shares | Live |
| GEM UNIVERSE JEWELRY MANUFACTURING LIMITED | Private company limited by shares | Live |