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The vacuum machine uses plastic composite film or plastic aluminum foil composite film as packaging material for various instruments and medicines, food, fruit, pickles, preserved fruits, aquatic products, native products, chemical raw materials, electronic components, and the like. Whether it is a solid, a powder, a paste or a liquid, it can be vacuum-sealed and packaged. Due to the high degree of vacuum in the bag, it can prevent the corrosion and deterioration of the products caused by the oxidation of lipids and aerobic microorganisms, and achieve quality assurance. The function of preserving, preserving, and preserving color extends the storage period of the product (goods), and at the same time, for some soft items, after vacuum packaging, the packaging volume is reduced and transported.