All of our machines are made of high quality resources, it incorporates 2T welding then milling built-in molding body, Japanese 20CrMnTi CNC precision machining cam , 4-axis CNC machining clamp and aviation aluminum engraving and milling vacuum chamber, which ensure that of your long lifestyle cycle of our machine. https://mondaydirectory.com/listings13071238/new-step-by-step-map-for-vacuum-packaging-machine