| WASCO LIMITED | Private company limited by shares | Dissolved |
| WASCO COATINGS HK LIMITED | Private company limited by shares | Live |
| WASCO COATINGS LIMITED | Private company limited by shares | Live |
| WASCO GROUP LIMITED | Private company limited by shares | Live |
| WASCO TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| HongKong Wasco Limited | Private company limited by shares | Live |
| WASCO INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WASCO CHINA INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WASCO E&P SERVICES LIMITED | Private company limited by shares | Live |
| WASCO UNITED GROUP TRADING CO., LIMITED | Private company limited by shares | Live |
| Wascott Property Limited | Private company limited by shares | Live |