| AMTEC LIMITED | Private company limited by shares | Dissolved |
| CHINA AMTEC LIMITED | Private company limited by shares | Dissolved |
| AMTec Electrical Limited | Private company limited by shares | Live |
| AMTEC INVESTMENT LIMITED | Private company limited by shares | Live |
| AMTECH LIMITED | Private company limited by shares | Live |
| AMTECH LLC LIMITED | Private company limited by shares | Live |
| AMTECH ASIA LIMITED | Private company limited by shares | Dissolved |
| AMTECH ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Hong Kong AmTech International Trading and Investment Company Limited | Private company limited by shares | Live |
| AMTECH INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| AmTechProject Limited | Private company limited by shares | Live |