| UNION STEP LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MARCH INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIDEC ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIONTEX COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNICOT LIMITED | Private company limited by shares | Live |
| PHOENIX UNDERWRITERS LIMITED | Private company limited by shares | Live |
| UNITED KIT LIMITED | Private company limited by shares | Dissolved |
| CENTURY UNION LIMITED | Private company limited by shares | Dissolved |
| UNIONUP INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| PROUD UNION LIMITED | Private company limited by shares | Dissolved |
| UNIPRIME LIMITED | Private company limited by shares | Live |
| UNISTRONG ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNISTRONG INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIDEN ELECTRONIC COMPONENTS HONG KONG LIMITED | Private company limited by shares | Dissolved |
| HEALTH UNION LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNI-SOURCE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MASS UNION INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNION MATE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION INTERIOR DESIGN & DECORATION COMPANY LIMITED | Private company limited by shares | Live |
| ELECT UNION LIMITED | Private company limited by shares | Dissolved |
| UNION HARVEST DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION FOREST LIMITED | Private company limited by shares | Dissolved |
| UNION (INTERNATIONAL) KNITTING FACTORY LIMITED | Private company limited by shares | Live |
| ASIATIC UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MASS UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION PROFIT INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNITED TEAMS LIMITED | Private company limited by shares | Dissolved |
| RJ UNIFOODS LIMITED | Private company limited by shares | Dissolved |
| UNICHEM CONSTRUCTION PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| KING UNISON LIMITED | Private company limited by shares | Dissolved |
| MAIN UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION RISING DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION HOME DEVELOPMENT LIMITED | Private company limited by shares | Live |
| TSUEN WAN WAI CHOW MAIN UNION (SCHOOL) LIMITED | Company limited by guarantee | Dissolved |
| STRONG UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION COSMOS (H.K.) LIMITED | Private company limited by shares | Dissolved |
| LUCKY UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| LUCKY UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIBASE LIMITED | Private company limited by shares | Live |
| POC UNITED ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNION GATE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GATE KNITTING FACTORY LIMITED | Private company limited by shares | Live |
| UNION SCHEME INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| UNIS RESEARCH LIMITED | Private company limited by shares | Dissolved |
| UNISON FOREIGN EXCHANGE LIMITED | Private company limited by shares | Live |
| UNIQUE SENSE LIMITED | Private company limited by shares | Dissolved |
| UNION LINK INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION FORD INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIONCHARM INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNISTAG COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNIQUE SKY LIMITED | Private company limited by shares | Dissolved |
| UNIWELL ELECTRONIC LIMITED | Private company limited by shares | Live |
| JUST UNION LIMITED | Private company limited by shares | Live |
| CHARMING UNION INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| DOUBLE UNION PROMOTION LIMITED | Private company limited by shares | Dissolved |
| UNION JET INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION PEARL DEVELOPMENT LIMITED | Private company limited by shares | Live |
| GREAT UNION FREIGHT SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| UNIHALE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNIFIT INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| VIC UNITY COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITRAIN LIMITED | Private company limited by shares | Dissolved |
| UNILIVE LIMITED | Private company limited by shares | Live |
| UNION MODE INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNION WINGS INDUSTRIES LIMITED | Private company limited by shares | Live |
| CHINA UNION DESIGN & CONSULTANTS CO. LIMITED | Private company limited by shares | Live |
| OPEN UNION INDUSTRIAL LIMITED | Private company limited by shares | Live |
| UNDERWATER WORLD LIMITED | Private company limited by shares | Dissolved |
| UNION WINGS INVESTMENTS LIMITED | Private company limited by shares | Live |
| UNION LOUNGE LIMITED | Private company limited by shares | Dissolved |
| C.C.K. (UNIVERSAL) TRADING LIMITED | Private company limited by shares | Dissolved |
| UNI-FIRST INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNITED TONG PLASTIC FACTORY LIMITED | Private company limited by shares | Dissolved |
| FUJIN (UNITED) LIMITED | Private company limited by shares | Dissolved |
| UNIONCALL LIMITED | Private company limited by shares | Dissolved |
| UNI-SHINE LIMITED | Private company limited by shares | Dissolved |
| GROUP UNITED LIMITED | Private company limited by shares | Dissolved |
| UNI-GRAPHICS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE TIME CO. LIMITED | Private company limited by shares | Live |
| WIDE UNION TEXTILES COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION-JACK INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| EVER UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNIEAST COMPANY LIMITED | Private company limited by shares | Live |
| UNION COMMUNICATIONS LIMITED | Private company limited by shares | Dissolved |
| UNION SCORE DEVELOPMENT LIMITED | Private company limited by shares | Live Commenced dormancy on 02-Feb-2001 |
| UNIVERSAL TRIP LIMITED | Private company limited by shares | Dissolved |
| UNICARDO LIMITED | Private company limited by shares | Dissolved |
| HEADCROWN UNIVERSAL LIMITED | Private company limited by shares | Live |
| UNION SCORE INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION TRANSPORT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SCORE LIMITED | Private company limited by shares | Dissolved |
| UNION ALPHA TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CHEER UNISON LIMITED | Private company limited by shares | Dissolved |
| UNITED LILY COMPANY LIMITED | Private company limited by shares | Dissolved |
| DOGGUE UNIVERSAL ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SHEEN LIMITED | Private company limited by shares | Dissolved |
| VOTETON UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| PRESSWORLD UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIPOINT INVESTMENTS LIMITED | Private company limited by shares | Dissolved |