| GREAT UNION CORPORATION LIMITED | Private company limited by shares | Live |
| UNION WISE HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| GIANT UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| RIGHT UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| POLY UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| WELL UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| SINO UNION PETRO-CHEMICAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION WORKS LIMITED | Private company limited by shares | Live |
| BRIGHT UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SINO UNION ENTERPRISE LIMITED | Private company limited by shares | Live Commenced dormancy on 31-Dec-2014 |
| EXPRESS UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SUN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CYBER UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| CENTRAL UNION LIMITED | Private company limited by shares | Live |
| UNION KING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| ABLE UNION LIMITED | Private company limited by shares | Dissolved |
| UNION STATE LIMITED | Private company limited by shares | Live |
| UNION TIME TRADING LIMITED | Private company limited by shares | Dissolved |
| SILVER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION PLASTIC ENTERPRISE (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNIONS LIMITED | Private company limited by shares | Dissolved |
| UNION FIT HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SKY S & P LIMITED | Private company limited by shares | Live |
| GAIN UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION SUCCESS GARMENT ACCESSORIES CO. LIMITED | Private company limited by shares | Live |
| UNION TIME ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION FORCE TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNION WIRE AND PLUG COMPANY LIMITED | Private company limited by shares | Dissolved |
| TOP UNION ASIA LIMITED | Private company limited by shares | Dissolved |
| UNION RANK INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION DEVELOPMENT (HK) LIMITED | Private company limited by shares | Dissolved |
| UNION-TECHNOLOGY DEVELOPMENT (H.K.) CO., LIMITED | Private company limited by shares | Dissolved |
| UNION SHARP LIMITED | Private company limited by shares | Dissolved |
| UNION BIOTECH INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| CHAMPION UNION (HK) DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION CORPORATION WORLDWIDE LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION OPTICAL CO., LIMITED | Private company limited by shares | Dissolved |
| UNION VICTORY HOLDINGS LIMITED | Private company limited by shares | Live |
| JOINT UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| FORTUNE UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| GLOBAL UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| UNION SUN HOLDINGS LIMITED | Private company limited by shares | Live |
| UNION CONCORD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION WEALTH INTERNATIONAL HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION WAY GARMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GLORY HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| FRUITS UNION LIMITED | Private company limited by shares | Live |
| FIRST UNION TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| KING'S UNION PROPERTY CONSULTANTS LIMITED | Private company limited by shares | Live |
| GENTLE UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CHANCE UNION INDUSTRIES LIMITED | Private company limited by shares | Live |
| UNION SMART LIMITED | Private company limited by shares | Dissolved |
| FAME UNION LIMITED | Private company limited by shares | Live |
| UNION GOLD CONSULTANTS LIMITED | Private company limited by shares | Dissolved |
| UNION ASSETS LIMITED | Private company limited by shares | Dissolved |
| UNIONPOWER SHIPPING (CHINA) LIMITED | Private company limited by shares | Live |
| GREAT UNION (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| UNION LEADER INVESTMENT LIMITED | Private company limited by shares | Live |
| RICH UNION LIMITED | Private company limited by shares | Dissolved |
| UNION TEAM INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| UNION EASY (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNION SERVICE CO. LIMITED | Private company limited by shares | Live |
| OVERSEAS UNION TRADERS (HK) COMPANY LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| UNION GROUP EXPORT CENTER CO., LIMITED | Private company limited by shares | Live |
| SINO UNION INTERNATIONAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| JOY UNION INTERNATIONAL TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION SUMMIT LIMITED | Private company limited by shares | Live |
| UNION ASCENT LIMITED | Private company limited by shares | Live |
| UNION MART (H.K.) LIMITED | Private company limited by shares | Live |
| UNION FASHIONS HOLDING LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION INTERNATIONAL EXPRESS SERVICE LIMITED | Private company limited by shares | Dissolved |
| SMART UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNIONET ENTERPRISE LIMITED | Private company limited by shares | Live |
| LONG UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION INDUSTRIES (HK) LIMITED | Private company limited by shares | Dissolved |
| KARMA UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION INDUSTRIAL (FAR EAST) LIMITED | Private company limited by shares | Live |
| WORLD UNION HI-TECH CO., LIMITED -THE- | Private company limited by shares | Dissolved |
| BRIGHT SMOOTH DOCTORS' UNION LIMITED | Private company limited by shares | Dissolved |
| SUPER UNION TRADING LIMITED | Private company limited by shares | Dissolved |
| UNION WAY MANAGEMENT LIMITED | Private company limited by shares | Live |
| PACIFIC UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION POWER (H.K.) LIMITED | Private company limited by shares | Live |
| UNION SUN DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| WORLD IMAGE STYLIST UNION LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION NETWORK LIMITED | Private company limited by shares | Live |
| ORIENT UNION INTERNATIONAL TRADING & TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| UNION TEXTILE GARMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION SUCCESS (OIL) LIMITED | Private company limited by shares | Dissolved |
| INT'L CULTURE EDUCATION TRADES UNION LIMITED | Private company limited by shares | Dissolved |
| EVER UNION ENTERPRISES LIMITED | Private company limited by shares | Live |
| CHAMPION UNION LIMITED | Private company limited by shares | Dissolved |
| UNION SHARE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GOOD UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION SYSTEMS INTERNATIONAL COMPANY LIMITED | Private company limited by shares | Live |
| UNION FAITH RESIDENTIAL TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION GAIN HOLDINGS LIMITED | Private company limited by shares | Dissolved |