| UNI-TECH ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| J UNITED COMPANY LIMITED | Private company limited by shares | Live |
| UNION CHARTER CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNIVIEW ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION EAST ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| Unimatrix China Limited | Private company limited by shares | Dissolved |
| UNION TRANSPORTATION LIMITED | Private company limited by shares | Live |
| ROY UNION LIMITED | Private company limited by shares | Dissolved |
| UNITED CHINA INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED STAR ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION STAR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION ALPHA C.P.A. LIMITED | Private company limited by shares | Live |
| UNISONIC HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNI-LAND PROPERTY GROUP LIMITED | Private company limited by shares | Live |
| UNION GRAND HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| CHARMING UNIVERSE LIMITED | Private company limited by shares | Live |
| UNISOURCE ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION SKY CATERING LIMITED | Private company limited by shares | Dissolved |
| MEGA UNIVERSE ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNIFLAIR ASIA PACIFIC LIMITED | Private company limited by shares | Dissolved |
| UNITS AUTO & HYDRAULICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ART TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TECH UNION DEVELOPMENT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNIS TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| WELL UNION TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| UNI-STAR COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED CREATIVE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CONCEPTS COMPANY LIMITED | Private company limited by shares | Live |
| UNI-TALENT TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION LOGISTICS LIMITED | Private company limited by shares | Dissolved |
| UNION DEVELOPMENT HOLDINGS LIMITED | Private company limited by shares | Live |
| SINO UNION ENTERPRISE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE SUCCESS ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION INVESTMENT INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HARVEST UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION SQUARE CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION OCEAN INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION WATCH (H.K.) LIMITED | Private company limited by shares | Live |
| UNION PROPERTY (ASIA) HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNITED STRATEGY LIMITED | Private company limited by shares | Live |
| UNION FORTUNE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| JET UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION (GLOBAL) LOGISTICS LIMITED | Private company limited by shares | Live |
| FORD UNION LIMITED | Private company limited by shares | Live |
| UNION WINNING LIMITED | Private company limited by shares | Dissolved |
| UNINEWS STRATEGIC INVESTMENT LIMITED | Private company limited by shares | Live |
| CROWN UNION ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| GOODKING JUNHUA INTERNATIONAL AUCTION UNITED GROUP LIMITED | Private company limited by shares | Dissolved |
| UNITED CERAMICS MANUFACTORY LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNICON LIMITED | Private company limited by shares | Dissolved |
| UNISOURCE LIMITED | Private company limited by shares | Dissolved |
| EVER UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE INTELLECTUAL PROPERTY LIMITED | Private company limited by shares | Live |
| ART UNION ENVIRONMENTAL LIMITED | Private company limited by shares | Dissolved |
| UNION MEDIA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNI-PLUS ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNITED BEST COMPANY LIMITED | Private company limited by shares | Live |
| HK UNIVERSE INT'L DRESS LIMITED | Private company limited by shares | Dissolved |
| UNOGOLD LIMITED | Private company limited by shares | Live |
| SOUTH UNION BROTHERS COMPANY LIMITED | Private company limited by shares | Live |
| YOU UNLIMITED LIMITED | Private company limited by shares | Live |
| UNION FAITH TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| RICH UNION INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION LINK INTERNATIONAL MOVERS (HK) LIMITED | Private company limited by shares | Live |
| WINMARK - UNION CHANCE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION POWER HK CPA LIMITED | Private company limited by shares | Live |
| TOP UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION FAIR HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNITED TECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| RADIO UNISON COMPANY LIMITED | Private company limited by shares | Live |
| UNION PROSPER INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNITED VISION LIMITED | Private company limited by shares | Dissolved |
| HK UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION FIELD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION MASTER INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SINO UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| USA UNION AUMEIA TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION CREATIVE INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION CASTINGS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITEDWOOD INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| GAINFUL UNIVERSAL FOODS LIMITED | Private company limited by shares | Live |
| CHINA TRADE UNION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE MUSIC LIMITED | Private company limited by shares | Live |
| UNIVISION LIMITED | Private company limited by shares | Dissolved |
| UNION TECHNOLOGY DEV., LIMITED | Private company limited by shares | Live |
| SHEEN UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNITED ASSET LIMITED | Private company limited by shares | Dissolved |
| UNION DRAGON LIMITED | Private company limited by shares | Dissolved |
| UNION SENSE LIMITED | Private company limited by shares | Dissolved |
| UNITED LUCK LIMITED | Private company limited by shares | Dissolved |
| TRI UNION INTERNATIONAL CO. LIMITED | Private company limited by shares | Dissolved |
| UNION ASSETS HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION SECURITIES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL RAYS LIMITED | Private company limited by shares | Live |
| BRIGHT START UNION COMMUNICATION LIMITED | Private company limited by shares | Live |
| UNION GEM LIMITED | Private company limited by shares | Dissolved |
| SUNNY UNITED LIMITED | Private company limited by shares | Live |
| UNI-WELL TRANSPORTATION LIMITED | Private company limited by shares | Live |