| LONGTU DECARATION CO., LIMITED | Private company limited by shares | Dissolved |
| TW Decarb HK P6 Limited | | Live |
| DECARBON LIMITED | Private company limited by shares | Live |
| Decarbon Tech Limited | Private company limited by shares | Live |
| Decarbonable Technology Limited | | Live |
| Decare Technology Co., Limited | Private company limited by shares | Live |
| DECARICH LIMITED | Private company limited by shares | Dissolved |
| DECARISE LIMITED | | Live |
| DECART DESIGN INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| DECARVINGS Global Trading Co., Limited | Private company limited by shares | Live |