| L. Y. WINIFRED & COMPANY LIMITED | Private company limited by shares | Dissolved |
| WINIFRED LIMITED | Private company limited by shares | Live |
| WINIFRED ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| WINIFRED CLEANROOM & ESD PRODUCTS (HONG KONG) LIMITED | Private company limited by shares | Live |
| WINIFRED INTERNATIONAL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| WINIFRED INVESTMENTS LIMITED | Private company limited by shares | Live |
| WINIFRED PRECISION TECHNOLOGY LIMITED | Private company limited by shares | Live |