The thickness of ptfe mask cloth is only about 0.2mm, which is very light and thin.
Intersected with traditional non-woven masks, they are much thinner.
The filter layer used by the mask membrane is less than 1/6 the thickness of traditional non-woven masks, and the breathing resistance of the mask is positively correlated with its thickness.
The nanometer-scale distribution of membrane pore sizes makes a layer of physical screening and filtration a reality, greatly reducing breathing resistance.
Only 1/2 of traditional non-woven masks.
</p
