| RETAIN LIMITED | Private company limited by shares | Dissolved |
| RETAIN CAPITAL LIMITED | Private company limited by shares | Dissolved |
| Retain G&H Co., Limited | Private company limited by shares | Live |
| RETAIN INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| GLORY RETAIN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| Hong Kong Retain (Global) Co., Limited | | Live |
| RETAIN PROFITS LIMITED | Private company limited by shares | Dissolved |
| RETAIN PROSPER LIMITED | Private company limited by shares | Live |
| BEST RETAINER INVESTMENTS LIMITED | Private company limited by shares | Live |
| EARTH RETAINING STRUCTURES LIMITED | Private company limited by shares | Dissolved |