| T-Tech Co., Limited | Private company limited by shares | Live |
| T-TECH Electronics Limited | Private company limited by shares | Live |
| T-TECH Engineering Company Limited | | Live |
| TTech Global Service Limited | Private company limited by shares | Live |
| T-TECH GROUP CO., LIMITED | Private company limited by shares | Live |
| T-TECH INDUSTRIAL LIMITED | Private company limited by shares | Live |
| TTECH (CHINA) INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| T-TECH INTERNATIONAL LIMITED | Private company limited by shares | Live |
| TTech Technology Company Limited | Private company limited by shares | Live |