| SUN TRONIC COMPANY LIMITED | Private company limited by shares | Live |
| TRONIC LIMITED | Private company limited by shares | Dissolved |
| Ace Tronic Limited | Private company limited by shares | Dissolved |
| SP TRONIC LIMITED | Private company limited by shares | Dissolved |
| DB TRONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRONIC LIMITED | Private company limited by shares | Live |
| Tronic One HK Limited | Private company limited by shares | Live |
| Tec Tronic Company Limited | | Live |
| TRONIC HK LIMITED | | Live |
| TRONIC AUTOMATIC SOLUTIONS LIMITED | Private company limited by shares | Dissolved |
| China Tronic System Limited | Private company limited by shares | Dissolved |
| Tronic CO., LIMITED | | Live |
| TRONIC COMPUTER SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| TAI TRONIC ELECTRONIC COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRONIC ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Lett Tronic Group Limited | | Live |
| Tronic Mighty Company Limited | | Live |
| TRONIC TECH COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRONIC TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| NEW TRONIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| BEST TRONIC TECHNOLOGY LIMITED | Private company limited by shares | Live |
| TRONIC TRADING LIMITED | Private company limited by shares | Dissolved |
| TRONIC TRADING LIMITED | Private company limited by shares | Live |
| TRONIC HK TRADING COMPANY LIMITED | | Live |
| TRONICA LIMITED | Private company limited by shares | Dissolved |
| TRONICA ELECTRONIC ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| TRONICA ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| TRONICA INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRONICA CASH REGISTER LIMITED | Private company limited by shares | Dissolved |
| TRONICA TECHNOLOGY HOLDING LIMITED | | Live |
| TronicBay Limited | Private company limited by shares | Live |
| NEW TRONICS COMPANY LIMITED | Private company limited by shares | Live |
| TRONICS LIMITED | Private company limited by shares | Live |
| HK Tronics Co., Limited | | Live |
| SHENZHEN PRI - TRONICS CO., LIMITED | Private company limited by shares | Live |
| DYNAMIC TRONICS LIMITED | Private company limited by shares | Live |
| GUANGJU ELEC TRONICS HK CO., LIMITED | Private company limited by shares | Live |
| HOPE TRONICS FACTORY LIMITED | Private company limited by shares | Live |
| TRONICS GROUP LIMITED | Private company limited by shares | Live |
| Istanbul Tronics HK Limited | Private company limited by shares | Live |
| MICS TRONICS LIMITED | Private company limited by shares | Dissolved |
| MITCHELL TRONICS LIMITED | Private company limited by shares | Dissolved |
| SUCCESS TRONICS HK LIMITED | Private company limited by shares | Live |
| Super Tronics Limited | Private company limited by shares | Dissolved |