| H&S TECT COMPANY LIMITED | Private company limited by shares | Live |
| FAST TECT AUTOMATIC SYSTEMS LIMITED | Private company limited by shares | Live |
| GREEN TECT COMPUTER LIMITED | Private company limited by shares | Live |
| SCREEN TECT DEVELOPMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| TECT TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| TECTA FIRST HOLDINGS (FAR EAST) LIMITED | Private company limited by shares | Dissolved |
| TECTAILOR LIMITED | Private company limited by shares | Live |
| Tectamus Limited | Private company limited by shares | Live |
| TECTFIELD INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| TECTFIELD INVESTMENT LIMITED | Private company limited by shares | Live |
| TECTFIELD PRINTING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Tectives Education Company Limited | Private company limited by shares | Live |
| Tecto Limited | Private company limited by shares | Live |
| Tectom Limited | Private company limited by shares | Live |
| TECTOMIKA LIMITED | Private company limited by shares | Dissolved |
| TECTOMIKA LIMITED | Private company limited by shares | Live |
| Tecton Limited | Private company limited by shares | Live |
| TECTON ASIA LIMITED | Private company limited by shares | Dissolved |
| TECTONA LIMITED | Private company limited by shares | Live |
| TECTONA ENTERPRISES LIMITED | Private company limited by shares | Live |
| TECTONA GROUP LIMITED | Private company limited by shares | Live Ceased dormancy on 06-May-2016 |
| TECTONA TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| A.T.I. TECTONIKS LIMITED | Private company limited by shares | Live |
| TECTOP LIMITED | Private company limited by shares | Dissolved |
| TECTOR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TECTOYZ LIMITED | Private company limited by shares | Live |
| HK JIANYE TEC&TRADING LIMITED | Private company limited by shares | Dissolved |
| TECTRAN LIMITED | Private company limited by shares | Dissolved |
| Tectran Hong Kong Company Limited | Private company limited by shares | Live |
| TECTRESS INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Tectrile Limited | | Live |
| TECTRON LIMITED | Private company limited by shares | Dissolved |
| HI TECTRON LIMITED | Private company limited by shares | Live |
| TECTRON LIMITED | Private company limited by shares | Live |
| TECT-SHARP COMPANY LIMITED | Private company limited by shares | Dissolved |
| TECT-SHARP INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| TECT-SHARP INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TECTUFF LIMITED | Private company limited by shares | Live |
| Tectum Limited | Private company limited by shares | Live |
| Tectum Financial Company Limited | Private company limited by shares | Live |
| TECTURE IMPORT AND EXPORT LIMITED | Private company limited by shares | Live |
| TECTURES LIMITED | Private company limited by shares | Live |
| TECTWO TECHNOLOGY SERVICES LIMITED | Private company limited by shares | Live |
| TECTYL LIMITED | Private company limited by shares | Live |