O₂ Fresh Film is a breathable packaging film that effectively improves the freshness and shelf life of agricultural products. This film adjusts the oxygen permeability according to the respiration rate of the produce, helping to maintain freshness for an extended period after harvest. Our product uses a non-penetrating breathable film, preventing the ingress of microorganisms and eliminating the issue of microplastics that can arise from physical or laser processing. Additionally, it has selective permeability that allows gases to pass through while preventing water leakage. It is also cost-effective due to high-speed mass production. The ability to freely adjust permeability makes it applicable to all types of vegetables, which is another significant advantage.