| T. TREC INDUSTRIAL LIMITED | Private company limited by shares | Live |
| TRECA CAPITAL LIMITED | Private company limited by shares | Live |
| TRECE TRECE TRADING LIMITED | | Live |
| Trecentis Limited | Private company limited by shares | Dissolved |
| TRECENTO HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| Treco Group Holdings Limited | Private company limited by shares | Live |
| Treco Holdings (Hong Kong) Limited | Private company limited by shares | Dissolved |
| TRECO ELECTRONICS HONGKONG CO., LIMITED | Private company limited by shares | Dissolved |
| Treco International Limited | Private company limited by shares | Dissolved |
| TRECON LIMITED | Private company limited by shares | Dissolved |
| TRECYCLE RESOURCES CO., LIMITED | Private company limited by shares | Dissolved |