The ePTFE sterilizing high-efficiency bubble point membrane uses PTFE resin as raw material, through a special process, two-way stretching, and uses the unique node fibrillation of PTFE film, smooth surface, chemical resistance, air permeability and water impermeability, high flow rate and low pressure difference, Flame retardant, high temperature resistance, strong acid and alkali resistance, non-toxic and other characteristics, the products made have high filtration accuracy and fast filtration speed; long service life, widely used in biopharmaceutical industry and semiconductor industry acid, alkali, organic solvent and gas The sterilization and impurity removal filter.