Main products: aluminum foil bag, vacuum bag, shielding bags, aluminum bags, board vacuum bags, cooking food vacuum bag, nylon vacuum bag, anti-static bags and other packaging materials, metal. Bag Material description: OPP surface for printing, from the middle Preservation PET, PE inner layer for heating the adhesive. OPP, polypropylene, high tensile strength, light weight, non-toxic, odorless, environmentally friendly, using a wide range of advantages. PET, polyethylene terephthalate. PET as a packaging material advantages: ① has good mechanical properties, impact strength is 3 to 5 times that of other films, folding is good. ② oil, fat-resistant, resistant to acid, alkali, resistant to most solvents. ③ has excellent resistance to high temperature performance, long-term use in the temperature range of 120 ℃, 150 ℃ short-term use of high temperature resistant, can withstand -70 ℃ low temperature, and high, its mechanical properties at low temperature has little effect. ④ gas and water vapor permeability is low, both excellent gas barrier, water, oil and odor performance. ⑤ high transparency, can block ultraviolet rays, good gloss. ⑥ non-toxic, tasteless, health and safety, and can be directly used for food packaging. PE, polyethylene, odorless, non-toxic, feel like wax, has excellent low temperature performance (the lowest temperature up to -70 ~ -100 ℃), good chemical stability, resistance to most acid-base erosion (impatience acid with oxidizing properties), room temperature, soluble in common solvents, water absorption, excellent electrical insulation properties; but polyethylene for environmental stress (chemical and mechanical action) is very sensitive, heat aging resistance is poor.