This product adopts PA and PE composite processing, processing of composite vacuum bag, high vacuum degree, is unable to achieve the co extruded nylon. This product is transparent, non-toxic, tasteless, can make your products to maintain a long time, no leakage, to extend the shelf life of food, quality assurance. All of this product with food grade new material production. Penetration (oxygen) gas rate is low, the vacuum effect is good, high transparency, good moistureproof performance, tensile strength and resistance high puncture strength, installed hard particles vacuum after, not easy to produce honeycomb effect "or grains top wear the bag wall and leakage. This product is easy to heat sealing, good sealing, not easy to aging and so on. Widely used in food vacuum packaging (long-term preservation), but also for the packaging of tea, nuts and so on.