| TECCO LIMITED | Private company limited by shares | Dissolved |
| TECCO GROUP LIMITED | Private company limited by shares | Dissolved |
| TECCO HOLDING LIMITED | Private company limited by shares | Dissolved |
| TECCO INVESTMENTS LIMITED | Private company limited by shares | Live |
| TECCO TECHNOLOGY COMPANY LIMITED | | Live |
| TecComplete Limited | | Live |
| TECCON LIMITED | Private company limited by shares | Dissolved |
| TECCON ASIA LIMITED | Private company limited by shares | Live |
| TecCon Technology Limited | | Live |
| TECCOQ COMPANY LIMITED | Private company limited by shares | Live |