The automatic rotary vacuum packaging machine is used for filling preformed bag, it has a high quality of the sealing part, this improved the product specification product or packing bag contact parts adopt stainless steel or other materials which accord with the food hygienic requirements, guarantee hygiene and security of the food With different feeders changed to pack solid, liquid, thick liquid, powder and so on The packing bag suits in extensive range, suit for multi-layer compound, mono-layer PE, PP and so on Preformed bag made by film and paper.