| SILAS LIMITED | Private company limited by shares | Dissolved |
| SILAS CONSULTANTS LIMITED | Private company limited by shares | Live |
| Silas Industrial Co., Limited | Private company limited by shares | Live |
| SILAS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SILAS INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| SILAS & SONS (HK) LIMITED | | Live |
| Silas Technology Limited | Private company limited by shares | Live |
| Silas Trading Company Limited | Private company limited by shares | Dissolved |
| SILASIA TRADING LIMITED | Private company limited by shares | Live |
| SUI KAM SILASTIC LIMITED | Private company limited by shares | Live |
| HK HESHENG SILASTIC MANUFACTURE LIMITED | Private company limited by shares | Live |
| YISHIN SILASTIC METAL PRODUCT COMPANY LIMITED | Private company limited by shares | Dissolved |