Specification:14.5x9cm Features: 3-layer prevention and protection
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
Features: BFE≥98% PFE≥98% Standard: ASTM F 2100 Level 3