Commodity use: dustproof prevent fog droplets material: high quality new spinning viscose cloth, viscose fiber cloth, high density and the ears melt-blown fabric with polyester thread color: black and white and decorative pattern size: 17.5 * 9.5 cm disposable masks instructions; Factory direct sales, cheap sales, international test reports, such as CE certification documents complete, wholesale please book in advance, quantity is with preferential treatment. The delivery time, please consult customer service. Three layers of material: the first layer thickening 25 g mask double S 25 g95 melt-blown non-woven second layer thickening non-woven cloth masks the third layer thickening 25 g double S please consult customer service (custom)