Function and effect of preservative film Barrier, anti-fog , antibacterial, preservation, quality, weight, moisture loss ≤ 5%, decay rate ≤ 1%, delay oxidation, reduce decay, control mildew, reduce loss, and improve efficiency. Alleviate the pressure of insufficient cold chain, extend storage time, extend transportation time, and extend transportation distance, so that agricultural products can avoid the risk of slow sales and rot, let famous, special, and high-quality new agricultural products go out of the origin and go to the market, and develop efficient agriculture Scope of preservative film application Vegetables, fruits, edible fungi, grains, cold chain food, processed food. Fresh products are kept fresh and rot-proof, and dry products are moisture-proof and mildew-proof. The bag can be directly used for manual packaging of products , food factories, bases, front warehouses, farmers’ families, fields and supermarkets can be packaged, and it is easy to use. How to use preserv