| TESA PTY LIMITED | Private company limited by shares | Live |
| TESA 6 LIMITED | Private company limited by shares | Live |
| LONG TESAK COMPANY LIMITED | Private company limited by shares | Live |
| TES-AMM (H.K.) LIMITED | Private company limited by shares | Live |
| TESAN ELECTRONICS CO., LIMITED | Private company limited by shares | Dissolved |
| TESAN HONG KONG LIMITED | Private company limited by shares | Live Commenced dormancy on 23-Jan-2014 |
| TESAN INTERNATIONAL GROUP CO., LIMITED | Private company limited by shares | Dissolved |
| TESANA LIMITED | Private company limited by shares | Live |
| TESANA TRADING LIMITED | Private company limited by shares | Live |
| TESAROS LIMITED | Private company limited by shares | Live |