| TecSo Limited | Private company limited by shares | Live |
| TECSON LIMITED | Private company limited by shares | Dissolved |
| TECSON LIMITED | Private company limited by shares | Live |
| TECSON (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TECSON HONG KONG LIMITED | Private company limited by shares | Dissolved |
| TECSON INDUSTRIAL LIMITED | Private company limited by shares | Live |
| TECSON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TECSON PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| TECSON TRADE LIMITED | Private company limited by shares | Live |
| TECSON TRADING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| TECSONIC LIMITED | Private company limited by shares | Dissolved |
| TECSONIC ASIA COMPANY LIMITED | Private company limited by shares | Dissolved |