The hydrophilic PTFE membrane improved by chemical method can be applied to the filtration for water. The PTFE membrane with high porosity rate and high support intension can be applied gradually to water treatment, life sciences, chemical engineering, food and beverages, electronic and medicine industry etc. Product use Liquid filtration and purification, precise filtration in industrial water processing, filtration purification and product collection in the medical and electronic industry . Product feature High porosity rare:85%-90% Low surface friction coefficient: 0.1 High chemical compatibility Bearing high working temperature (180-260 ℃)