1 Physical filtering will not decay with the increase of use time and the efficiency will not decrease. 2 Small pore size between fibers, good barrier performance, able to block bacteria, viruses, pollen, pm0.3 and other substances 3 High porosity 90%, good air permeability, low resistance, reducing filter noise and energy consumption. 4 The specific surface area is large, which is about 100 times that of ordinary fiber membrane materials, and it can absorb smaller particles. Nano fiber diagram oxygen oxygen water
