| TINCHANG INDUSTRIAL LIMITED | | Live |
| TINCHAT INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| TINCHAW GROUP LIMITED | Private company limited by shares | Live |
| TINCHI LIMITED | Private company limited by shares | Dissolved |
| HUASEN TINCHO TECHNOLOGY (HONGKONG) CO., LIMITED | Private company limited by shares | Live |
| TINCHO INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Live |
| TINCHOK INVESTMENT (HONG KONG) LIMITED | Private company limited by shares | Live |
| TINCHPIN LIMITED | Private company limited by shares | Live |
| TINCHY LIMITED | Private company limited by shares | Dissolved |