| HK CANYU INTERNATIONAL BIOLOGY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| Canyu Co., Limited | Private company limited by shares | Live |
| NEW CANYU CO., LIMITED | Private company limited by shares | Live |
| CANYU FILTERS LIMITED | Private company limited by shares | Live |
| HONG KONG CANYU PHOTOELECTRIC TECHNOLOGY LIGHTING CO., LIMITED | Private company limited by shares | Live |
| Hong Kong Canyu Company Limited | Private company limited by shares | Live |
| CANYU INVESTMENT MANAGEMENT LIMITED | Private company limited by shares | Live |
| NINGBO CANYU OPTO ELECTRICAL CO., LIMITED | Private company limited by shares | Dissolved |
| NINGBO CANYU OPTO ELECTRONIC CO., LIMITED | Private company limited by shares | Dissolved |
| CANYU TECHNOLOGIES (HK) LIMITED | Private company limited by shares | Live |
| CANYU TECHNOLOGY (HK) LIMITED | Private company limited by shares | Live |
| HK CANYU MEMORY TECHNOLOGY LIMITED | Private company limited by shares | Live |