FFP2 protective mask is manufactured with nanofibrous film as the vore filter layer. And a four-layer structure of the mask is formed by the nanofibrous film with non-woven fabric, which is lighter and thinner than traditional FFP2 masks. The mask with at least 99.9% filtration efficiency effective against certain non-oil based. Particles like dust , pollen, gases ,odors, and it can effectively separate. PM2.5 fine particles and bacteria. Unique design with heightened nose piece and adjustable clip. Good balance between high efficiency of filtration and comfortable.