Main products: aluminum foil bag, vacuum bag, shielding bags, aluminum bags, board vacuum bags, cooking food vacuum bag, nylon vacuum bag, anti-static metal bags and other packaging materials. Vacuum where the lowest price? Where is the best quality vacuum? Vacuum where service is the best? ! Buy a vacuum bag to find material Kunshan Kunshan Chi Shing Chi Shing Materials Co., specializing in the production of the hotel: a composite vacuum bag, cooking vacuum bag, anti-static moisture-proof vacuum bag waterproof nylon vacuum bag, printing, food vacuum, high-temperature sterilization Cooking vacuum bag (also known as nylon), with permeability (oxygen) gas is low, the vacuum effect is good, high transparency, good moisture resistance, high tensile strength and puncture strength, easy to seal, sealing, and not aging ...... and so on. Mainly for food, electronic circuit boards, precision metal chemical can be custom made according to customer requirements: size, specifications, anti-static, high temperature and other functions, can also be printed pattern such as product description, company trademark, beautifully printed pattern, clear. Also known as decompression vacuum packaging, is based on the principle of atmospheric pressure, the main role of the vacuum bag is oxygen, in order to help prevent food spoilage or deterioration. Vacuum packaging is to package food bags and oxygen within the cell by pumping deprived, so that microbial processes lose "living environment". Food vacuum also prevents oxidation of food, so the food does not taste, deterioration to reduce the loss of vitamin A and C.