| SISCO COMPANY LIMITED | Private company limited by shares | Dissolved |
| SISCO SUN LIMITED | Private company limited by shares | Live |
| SISCO (ASIA) LIMITED | Private company limited by shares | Dissolved |
| SISCO INC. LIMITED | Private company limited by shares | Dissolved |
| SISCO PROPERTIES LIMITED | Private company limited by shares | Live |
| SISCO SUCCESS LIMITED | Private company limited by shares | Dissolved |
| SISCOM TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| SisCom Decorative Lighting Co., Limited | Private company limited by shares | Live |
| Siscomm Limited | Private company limited by shares | Live |