Masks made of kn95 mask filter membrane make breathing easier and freer when worn.
PTFE membrane is a flexible and elastic material with high porosity and very uniform pore size, so it has very good breathability.
The breathability of the materials used in traditional masks is far inferior. If worn for a long time, it will feel damp and hot, which can cause some abdominal diseases and is not good for physical and mental health.
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