| Company Name | Type | Status |
|---|---|---|
| SYHD ELECTRONIC CO., LIMITED | Private company limited by shares | Live |
| HK SYHDEE CO., LIMITED | Private company limited by shares | Dissolved |
| HK SYHDEE LIGHTING CO., LIMITED | Private company limited by shares | Live |
| SHENZHEN SYHDEE OPTOELECTRONICS TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |