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 , four-axis CNC machining clamp and aviation aluminum engraving and milling vacuum chamber, which make certain of the lengthy existence cycle of our machine. https://www.linpack.com/news/the-top-advantages-of-using-a-vacuum-packaging-machine-for-your-business