| Mainfly Doors Design Specialty Company Limited | Private company limited by shares | Live |
| HONGKONG MAINFOND GROUP HOTEL MANAGEMENT LIMITED | Private company limited by shares | Dissolved |
| MAINFONT INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| MAINFONT MATERIAL SUPPLIES LIMITED | Private company limited by shares | Dissolved |
| MAINFORD LIMITED | Private company limited by shares | Dissolved |
| MAINFORD LIMITED | Private company limited by shares | Dissolved |
| MAINFORD LIMITED | Private company limited by shares | Live |
| MAINFORD LIMITED | Private company limited by shares | Live |
| MAINFORD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINFORD INVESTMENT LIMITED | Private company limited by shares | Live |
| MAINFORD INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MAINFORD PROPERTIES LIMITED | | Live |
| MAINFORDER COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINFORT INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| MAINFRAME LIMITED | Private company limited by shares | Live |
| MAINFRAME ASIA LIMITED | Private company limited by shares | Dissolved |
| MAINFREIGHT LIMITED | Private company limited by shares | Dissolved |
| MAINFUL LIMITED | Private company limited by shares | Dissolved |
| MAINFULL COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINFULL LIMITED | Private company limited by shares | Dissolved |
| MAINFULL COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINFULL ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINFULL FRONTIER LIMITED | Private company limited by shares | Live |
| MAINFULL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MAINFULL MACHINERY LIMITED | Private company limited by shares | Dissolved |
| MainFunc HK Limited | | Live |
| MAINGAIN INVESTMENT LIMITED | Private company limited by shares | Live |
| MAINGARD CAPITAL LIMITED | Private company limited by shares | Dissolved |
| MAINGATE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINGO LIMITED | Private company limited by shares | Live |
| MAINGOLD INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| MAINGOLD INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MAINGOOD LIMITED | Private company limited by shares | Dissolved |
| Main-good Technology Co., Limited | Private company limited by shares | Live |
| MAINGOOD DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MAINGOOD DEVELOPMENT (H.K.) LIMITED | Private company limited by shares | Live |
| MAINGOOD ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINGOOD (H.K.) LIMITED | Private company limited by shares | Live |
| MAINGOOD INTERNATIONAL LIMITED | Private company limited by shares | Live |
| MAINGRACE DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| MAINGRADE COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINGROUP LIMITED | Private company limited by shares | Live |
| MAINHALL COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINHALL LIMITED | Private company limited by shares | Dissolved |
| MAINHAND INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| MAINHANSA INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MAINHART LIMITED | Private company limited by shares | Dissolved |
| MAINHE INVESTMENTS LIMITED | Private company limited by shares | Live |
| MAINHEAL INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Mainheim Motors (Asia) Limited | Private company limited by shares | Live |
| MAINHILL LIMITED | Private company limited by shares | Dissolved |
| MAINHOLD DEVELOPMENT LIMITED | Private company limited by shares | Live |
| MAINHOME CONSTRUCTION LIMITED | Private company limited by shares | Live |
| MAINHOOD INVESTMENTS LIMITED | Private company limited by shares | Live |
| MAINHOPE INVESTMENT LIMITED | Private company limited by shares | Live |
| MAINHORN RESEARCH & INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINHORSE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINHORSE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| MAINHOUSE ELECTRONICS COMPANY LIMITED | Private company limited by shares | Live |
| MAINHURST INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Cinzia Maini Limited | Private company limited by shares | Live |
| Maini Innovations Technology Co., Limited | | Live |
| MAINIC INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| MAINICE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Mainifire Technology (HK) CO., Limited | Private company limited by shares | Live |
| MAIN-IN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MAINING LIMITED | Private company limited by shares | Dissolved |
| MAINIO COMPANY LIMITED | Private company limited by shares | Live |
| MAINION COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINION LIMITED | Private company limited by shares | Dissolved |
| MAINITITUHAN INVESTMENT CO., LIMITED | Private company limited by shares | Dissolved |
| Mainiway International Company Limited | Private company limited by shares | Live |
| MAINKAR INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| MAINKEEN ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINKENT LIMITED | Private company limited by shares | Dissolved |
| MAINKEY MOTORS LIMITED | Private company limited by shares | Dissolved |
| MAINKEY PETROLEUM COMPANY LIMITED | Private company limited by shares | Live |
| MAINKING LIMITED | Private company limited by shares | Dissolved |
| MAINKING ENTERPRISE COMPANY LIMITED | Private company limited by shares | Live |
| MAINLAMP LIMITED | Private company limited by shares | Live |
| MAINLAND LIMITED | Private company limited by shares | Live |
| AEF GBA Mainland Limited | | Live |
| MAINLAND FYB LIMITED | | Live |
| Mainland Blooming Limited | Private company limited by shares | Live |
| CHINA BRIGHT MAINLAND LIMITED | Private company limited by shares | Live |
| MAINLAND CAPITAL LIMITED | Private company limited by shares | Dissolved |
| MAINLAND CARPET COMPANY LIMITED | Private company limited by shares | Dissolved |
| (HONGKONG) PROMOTION CENTER FOR BUSINESS TRAVEL & INVESTMENT IN CHINESE MAINLAND LIMITED | Private company limited by shares | Dissolved |
| CHINA MAINLAND LIMITED | Private company limited by shares | Live |
| CHINA MAINLAND GROUP LIMITED | Private company limited by shares | Live |
| South China (Mainland) Limited | Private company limited by shares | Live |
| MAINLAND INTERNATIONAL PETROLEUM STORAGE AND TRANSPORTATION CO., LIMITED | Private company limited by shares | Live |
| Cloud Computing Mainland Digital Technology Holdings (China) Co., Limited | Private company limited by shares | Live |
| MAINLAND ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| MAINLAND ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| MAINLAND EVENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAINLAND INVESTMENT ENTERPRISES PRODUCTS TRADE FAIR LIMITED | Private company limited by shares | Dissolved |
| MAINLAND FINANCE LIMITED | Private company limited by shares | Dissolved |
| GAIN MAINLAND LIMITED | Private company limited by shares | Dissolved |
| GERMANY MAINLAND GROUP (CHINA) LIMITED | Private company limited by shares | Live |