Standard: GB2626-2019
Materials: 50 gsm non-woven fabric/25 gsm melt-blown fabric*2 ply/50 gsm non-woven fabric
Size: 17*7.5 cm
DOE: 3 years
Model :C017
Material:non-woven+melt-blownx2+non-woven Features: Four layers of protection Filtration efficiency≥95% Willow-leaf cut, fits face contour