| W.S.T. BERNE COMPANY LIMITED | Private company limited by shares | Dissolved |
| W.Star Enterprise Company Limited | Private company limited by shares | Live |
| WST.D LIMITED | Private company limited by shares | Live |
| WSTD MEDICAL INVESTMENT MANAGEMENT CO., LIMITED | Private company limited by shares | Live |
| WS-TEAM LIMITED | Private company limited by shares | Live |
| WSTEPS Retail Service Company Limited | | Live |
| WSTG Limited | Private company limited by shares | Dissolved |
| HK WSTL INDUSTRIAL LIMITED | Private company limited by shares | Live |
| WSTONE CO., LIMITED | Private company limited by shares | Live |
| Wstpsystems Limited | Private company limited by shares | Live |
| WSTREAM COMPANY LIMITED | Private company limited by shares | Dissolved |
| WStrong Materials Co., Limited | Private company limited by shares | Live |
| WSTRONG TRADING CO., LIMITED | | Live |
| WSTV LIMITED | Private company limited by shares | Dissolved |