| HONGKONG UNIONTEL TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| LEADING UNION LIMITED | Private company limited by shares | Live |
| UNION GENESIS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TIHOM UNION CO., LIMITED | Private company limited by shares | Dissolved |
| WORLD PLUM FLOWER UNION GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION TECHNOLOGY (HK) TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAX UNION ENGINEERING LIMITED | Private company limited by shares | Live |
| MARKET UNION (HK) CO., LIMITED | Private company limited by shares | Live |
| China Int'l Commercial Union Group Limited | Private company limited by shares | Dissolved |
| GREATEST UNION LIMITED | Private company limited by shares | Live |
| DB UNION TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNIONCLEAR INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION BUILDING MATERIALS LIMITED | Private company limited by shares | Live |
| OCEAN UNION HONG KONG DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| QINGDAO SEAWINNER UNION MACHINERY CO., LIMITED | Private company limited by shares | Dissolved |
| BUILDER UNION GROUP CO., LIMITED | Private company limited by shares | Live |
| UNION BRIGHT INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| HUACHUANG UNION TECHNOLOGY CO., LIMITED | Private company limited by shares | Dissolved |
| UP UNION LIMITED | Private company limited by shares | Dissolved |
| CHINA FAST PRINTING UNION LIMITED | Private company limited by shares | Live |
| J&R UNION STEEL CO., LIMITED | Private company limited by shares | Dissolved |
| UNION OIL DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WIDE GROUP LIMITED | Private company limited by shares | Dissolved |
| NEW UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| HONG KONG RICH UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| LOYAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION LIFE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| GLOBAL VILLAGE UNION LIMITED | Private company limited by shares | Live |
| UNION LEGAL LIMITED | Private company limited by shares | Live |
| UNION INDUSTRIAL CONSULTING CO., LIMITED | Private company limited by shares | Live |
| UNION PROFIT MEDICINE LIMITED | Private company limited by shares | Live |
| FORE UNION LIMITED | Private company limited by shares | Dissolved |
| BROTHER UNION FURNITURE & INDUSTRY LIMITED | Private company limited by shares | Live |
| Union International Marketing Co., Limited | Private company limited by shares | Live |
| UNION STRONG GROUP LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA CONSULTING LIMITED | Private company limited by shares | Live |
| NANJING UNION CHEMICAL INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| CHINA EMERGENCY RELIEF CENTRE UNION LIMITED | Private company limited by shares | Live |
| World Contemporary Ink Artists Union Limited | Private company limited by shares | Live |
| SINO UNION MINING INVESTMENT HOLDING LIMITED | Private company limited by shares | Live |
| LONTEC UNION INTERNATIONAL CO., LIMITED | Private company limited by shares | Dissolved |
| Credit Union Investment Shares Limited | Private company limited by shares | Dissolved |
| CROWN UNION HOLDINGS LIMITED | Private company limited by shares | Live |
| H & C UNION INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| China Health Industry Union Limited | Private company limited by shares | Live |
| FULL UNION CONSULTANTS LIMITED | Private company limited by shares | Live |
| UNION DYNASTY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| GROUP UNION LIMITED | Private company limited by shares | Live |
| FAR UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| New Union Environmental Recycling & Trading Co., Limited | Private company limited by shares | Dissolved |
| HONGKONG WORLD UNION GROUP LIMITED | Private company limited by shares | Live |
| POWER UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ZHI ZUN INTERNATIONAL UNION LIMITED | Private company limited by shares | Live |
| FRAT UNION IMPORT & EXPORT CO., LIMITED | Private company limited by shares | Dissolved |
| UNION GROUP TRADING (GZ) CO., LIMITED | Private company limited by shares | Dissolved |
| UNION FAITH DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNION-STARS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| LINK UNION ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION QUEEN LIMITED | Private company limited by shares | Live |
| CHINA MAGNESIUM INDUSTRY UNION LIMITED | Private company limited by shares | Live |
| UNION SHINE INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION SINORISE PRIME INC. LIMITED | Private company limited by shares | Live |
| Union Zone Auto Aircon Limited | Private company limited by shares | Live |
| UNION BEST TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| GOLDEN UNION MANAGEMENT LIMITED | Private company limited by shares | Live |
| GLOVE UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| HANDMADE UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| World Union Industrial Co., Limited | Private company limited by shares | Dissolved |
| WORLD WOMEN HARMONY UNION MEETING LIMITED | Private company limited by shares | Dissolved |
| FIRST BROTHER UNION LIMITED | Private company limited by shares | Dissolved |
| UNION MINI-ELEKTRO CO., LIMITED | Private company limited by shares | Live |
| EMIC Culture Union Limited | Private company limited by shares | Live |
| PAN UNION TRADING INTERNATIONAL LIMITED | Private company limited by shares | Live |
| UNION WORLD TEXTILE COMPANY LIMITED | Private company limited by shares | Live |
| SINO UNION (H.K.) LIMITED | Private company limited by shares | Live |
| HONG KONG EXCELLENCE UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNION SUCCESS PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION PROFIT INTERNATIONAL PROPERTIES LIMITED | Private company limited by shares | Live |
| UNION PETROLEUM GROUP LIMITED | Private company limited by shares | Dissolved |
| HONGKONG UNION ELECTRONICS TECHNOLOGY CORPORATION LIMITED | Private company limited by shares | Live |
| UNION MINING (HK) GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION FIDELITY LIMITED | Private company limited by shares | Dissolved |
| UNIONPOWER INDUSTRY CO., LIMITED | Private company limited by shares | Dissolved |
| UNION LOYALTY INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION SHIPPING SERVICE (HK) LIMITED | Private company limited by shares | Dissolved |
| CHINESE COMMUNITY UNION DEVELOPMENT CO., LIMITED | Private company limited by shares | Dissolved |
| HK WISDOM UNION INTERNATIONAL GROUP LIMITED | Private company limited by shares | Live |
| UNION CHEMICAL (CHINA) CORPORATION LIMITED | Private company limited by shares | Live |
| HONGKONG UNION SECURITY INDUSTRY CORPORATION LIMITED | Private company limited by shares | Live |
| UNION PLASTICS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION CAPITAL GROUP (HONG KONG) LIMITED | Private company limited by shares | Live |
| UNION SKY DEVELOPMENT LIMITED | Private company limited by shares | Live |
| STAR UNION DEVELOPMENT LIMITED | Private company limited by shares | Live |
| PACIFIC UNION INTERNATIONAL TRADING LIMITED | Private company limited by shares | Live |
| UNION ART PRODUCTION COMPANY LIMITED | Private company limited by shares | Live |
| CHIEF UNION INVESTMENTS LIMITED | Private company limited by shares | Live |
| China Union Aluminum Pro. Company Limited | Private company limited by shares | Dissolved |
| UNION LINK ENGINEERING CONSTRUCTION LIMITED | Private company limited by shares | Live |