All of our machines are made of high quality materials, it includes 2T welding then milling built-in molding frame, Japanese 20CrMnTi CNC precision machining cam , 4-axis CNC machining clamp and aviation aluminum engraving and milling vacuum chamber, which ensure that on the extended life cycle of our machine. https://vacuum-packaging-machine79013.signalwiki.com/1314763/details_fiction_and_tray_sealing_machine