| Company Name | Type | Status |
|---|---|---|
| TOPSEC LIMITED | Private company limited by shares | Live |
| TOPSEC ENGINEERING LIMITED | Private company limited by shares | Dissolved |
| TOPSEC ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TOPSEC (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TOPSEC INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TOP-SEC MANAGEMENT LIMITED | Private company limited by shares | Live |
| TOPSECTOR LIMITED | Private company limited by shares | Dissolved |