All of our machines are created of top quality materials, it involves 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 make certain with the long existence cycle of our machine. https://base-directory.com/listings13115395/tray-sealing-machine-an-overview