The ePTFE is a kind of micro porous membrane formed from polytetrafluoroethylene by extrusion.
lt is found that the surface of the PTFE membrane is full of fibrillary micropores, and there are as many as 9 billion micropores per square inch.The cross-section is a kind of network structure,
and the three-dimensional structure of the pore has very complex structures, such as network connection, hole inlay, channel bending.The diameter of the water vapor molecule is 0.0004um, while
the diameter of mist with the smallest diameter in rainwater is 20um.