High density microporous film

The high-density microporous film is made by adding a certain number of micropores (40μ) to the film bag to enhance gas exchange, reduce humidity and volatile metabolites in the bag, and maintain a relatively high oxygen concentration in the bag (<1%). An oxygen concentration that is too low results in anaerobic respiration and the accumulation of large amounts of volatiles such as ethanol and acetaldehyde, which affects the freshness of the fruit. According to the different physiological properties of fruits and vegetables used to keep fresh.