| Company Name | Type | Status |
|---|---|---|
| Yhy1 Limited | Private company limited by shares | Live |
| Yhy2 Limited | Private company limited by shares | Live |
| Yhy3 Limited | Private company limited by shares | Live |
| Yhy4 Limited | Private company limited by shares | Live |
| Yhy5 Limited | Private company limited by shares | Live |
| YHYDPIPE (CHINA) LIMITED | Private company limited by shares | Dissolved |
| YHYIYI LIMITED | Private company limited by shares | Live |
| YHYKKH LIMITED | Private company limited by shares | Live |