Material structure: It has three, four, and five layers of aluminum foil bag structure, composed of PET, AL, PA, CPP, PE, BOPP. When combined with materials, it can be used for packaging dry food, high-temperature steamed food, pesticides, pharmaceuticals, and other products. The main use of the material is to block ultraviolet rays, have low oxygen permeability, waterproof, moisture-proof, and puncture resistant characteristics to meet the requirements of food packaging