| Silica Limited | Private company limited by shares | Live |
| SILICA ASIA LIMITED | Private company limited by shares | Live |
| Silica Materials Co., Limited | Private company limited by shares | Live |
| Sinotech Silica Co., Limited | | Live |
| SILICA GLORY LIMITED | | Live |
| OYUAN SILICA RESOURCES LIMITED | Private company limited by shares | Dissolved |
| FOSHAN JINHUI SILICA GEL TECHNOLOGY LIMITED | Private company limited by shares | Live |
| SILICA TRADING LIMITED | Private company limited by shares | Dissolved |
| SILICA TRADING LIMITED | Private company limited by shares | Dissolved |
| TRIMERIZATION SILICA-GEL PRODUCTS LIMITED | Private company limited by shares | Dissolved |
| SILICANO LIMITED | Private company limited by shares | Live |
| SILICASTONE LIMITED | Private company limited by shares | Live |
| KOWLOON SODIUM SILICATE FACTORY, LIMITED | Private company limited by shares | Live |
| TUNG HOI SODIUM SILICATE MANUFACTORY LIMITED | Private company limited by shares | Dissolved |