| HK SUMER LOGISTIC LIMITED | Private company limited by shares | Live |
| SUMER MICROELECTRONICS LIMITED | Private company limited by shares | Dissolved |
| HONGKONG SUMERAIN GROUP LIMITED | Private company limited by shares | Live |
| HONGKONG SUMERAIN SANITARY INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Sumerian Telecom Limited | | Live |
| Sumerians Holding Limited | Private company limited by shares | Live |
| Sumeric Company Limited | Private company limited by shares | Live |
| SUMERRA LIMITED | Private company limited by shares | Live |
| SUMERSIDE LIMITED | Private company limited by shares | Live |
| SumerTech HK Limited | Private company limited by shares | Live |
| Grand SumerTech HK Limited | Private company limited by shares | Live |
| Sumeru Limited | | Live |
| SUMERU ART GALLERY CO., LIMITED | Private company limited by shares | Live |
| HK SUMERWIND TRADE LIMITED | Private company limited by shares | Live |