The Three-dimensional KN95 Protective Mask is made up of non-woven fabric, high efficiency electrostatic melt-blown material, a nose clip, and elastic band ear-loops. Its purpose is to filter the air and prevent harmful gases, smells, and droplets from entering and leaving the mouth and nose of the person wearing it. It meets the GB2626-2006 standard and has a tight-fitting face seal. Its filter performance is 95%, effectively filtering out at least 95% of 0.3um airborne particles. It is recommended to discard the mask after use.