Customization of self-supporting food packaging bags Application: Food, tea Material structure: ONY/PE, BOPP/CPP, PET/PE, PET/AL/PE, PET/VMPET/PE Can be made into a yin and yang bag Opening force inside and outside the zipper: ≥ 50N/50mm inside Product Usage: This product comes with a built-in seal, which can stand and be repeatedly sealed, with a beautiful appearance! The advantages of the product can be demonstrated from multiple aspects, which can be used for packaging various foods, veterinary drugs, fertilizers, pesticides, chemical products, etc