One is made of pure cotton absorbent gauze or non-woven cloth material with filter paper in the middle, so as to improve the filtering effect of non-woven cloth mask.
The material of dust respirator is made of non-woven cloth. The functions of dust respirator are as follows: to prevent or reduce dust in the air from entering human respiratory organs so as to protect life and safety;
The filter material of FFP2 mask is mainly divided into four layers, namely two layers of non-woven cloth + one layer of dissolved spray cloth + one layer of needled cotton.
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