The mask is composed of the mask body and the tension belt. The mask body is divided into three
layers: inner, middle and outer. The inner and outer layers are SS non-woven fabric, and the middle layer is filter layer melt blown fabric. The mask has strong hydrophobicity and air permeability, and has remarkable filtering effect on micro virus aerosol or harmful dust. The overall filtering effect is good, and the materials used are non-toxic, harmless and comfortable to wear.