The filtering efficiency is above 95%. In addition to the filtering efficiency of the N95 mask, the closeness of the mask to the face is one of the important factors determining the effectiveness of the mask. Different types of masks have a greater suitability with the human face The difference. Therefore, before using a mask, the suitability of the mask should be checked first. When the wearer's face is tightly tested, make sure that air can pass in and out through the mask when it is close to the edge of the face¡£