All of our machines are made of top quality materials, it contains 2T welding then milling built-in molding body, Japanese 20CrMnTi CNC precision machining cam , four-axis CNC machining clamp and aviation aluminum engraving and milling vacuum chamber, which be certain of the prolonged life cycle of our machine. https://aivenf911qdq5.wikicorrespondent.com/user