| TRONEE THREAD COMPANY LIMITED | Private company limited by shares | Live |
| Troneer (Bio-Technology) Limited | Private company limited by shares | Live |
| TRONEER ELECTRONICS ENGINEERING (HK) LIMITED | Private company limited by shares | Live |
| TRONEER PERFORMANCE PRODUCTION LIMITED | Private company limited by shares | Live |
| TRONEER TECHNOLOGY (ASIA) LIMITED | Private company limited by shares | Live |
| TRONERGY COMPANY LIMITED | Private company limited by shares | Live |
| TRONERO HOME DECORATIONS CO., LIMITED | Private company limited by shares | Dissolved |
| Tronex (Asia), Limited | Private company limited by shares | Live |
| ITALY TRONEX (HK) INT'L LIMITED | Private company limited by shares | Dissolved |