| UNION EPOCH LIMITED | Private company limited by shares | Dissolved |
| UNION GOOD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| GOLDEN UNION INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| NEW UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| BRIGHT UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| BRIGHT UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| SUNNY UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| RICH UNION GLOBAL LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| TRADE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CHARTER CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION ENGINEERING 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 |
| UNION TRANSPORTATION LIMITED | Private company limited by shares | Live |
| ROY UNION LIMITED | Private company limited by shares | Dissolved |
| UNION STAR INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION ALPHA C.P.A. LIMITED | Private company limited by shares | Live |
| UNION GRAND HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SKY CATERING 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 |
| WELL UNION TECHNOLOGIES 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 |
| 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 |
| 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 |
| CROWN UNION ELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| EVER UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Dissolved |
| ART UNION ENVIRONMENTAL LIMITED | Private company limited by shares | Dissolved |
| UNION MEDIA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION BROTHERS COMPANY 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 |
| UNION PROSPER INDUSTRIAL 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 |
| CHINA TRADE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION TECHNOLOGY DEV., LIMITED | Private company limited by shares | Live |
| UNION DRAGON LIMITED | Private company limited by shares | Dissolved |
| UNION SENSE 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 |
| BRIGHT START UNION COMMUNICATION LIMITED | Private company limited by shares | Live |
| UNION GEM LIMITED | Private company limited by shares | Dissolved |
| EAST UNION CONSTRUCTION FIRM LIMITED | Private company limited by shares | Live |
| RICHLY (UNION) ENGINEERING 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 |
| ROOM UNION LIMITED | Private company limited by shares | Dissolved |
| UNION EAST (H.K.) LIMITED | Private company limited by shares | Live |
| 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 |
| UNION WISE APPLIED TECHNOLOGY HOLDING LIMITED | Private company limited by shares | Dissolved |
| FEI YEUNG UNION (HOLDINGS) LIMITED | Private company limited by shares | Live |
| CHINA UNION CHEMICAL INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| 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 |
| UNION ENTERPRISE INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WING TAI UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION TOUGH ADVERTISEMENT LIMITED | Private company limited by shares | Live |
| AMERICA EURO UNION GROUP HONGKONG 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 |
| 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 |
| UNION RICH (HONG KONG) SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| EASTERN UNION INVESTMENTS 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 |