| Tanso Limited | Private company limited by shares | Live |
| PT TANSO PUTRA ASIA LIMITED | Private company limited by shares | Dissolved |
| Toyo Tanso Taiwan Limited | Private company limited by shares | Dissolved |
| TANSOL COMPANY LIMITED | Private company limited by shares | Dissolved |
| TANSON LIMITED | Private company limited by shares | Dissolved |
| TANSON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TANSON ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TANSON INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| TANSON MIGRATION LIMITED | Private company limited by shares | Live |
| TANSONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| TANSOOL SCIENTIFIC LIMITED | Private company limited by shares | Live |