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KN95 external mask
Product features: 5-layer structured three-dimensional mask, KN95 specification 0.3 micron particle filter> = 95%. The nose clip is externally attached to the face for easy wearing.
Execution standard: strictly in accordance with the technical requirements and test methods of China KN95 specifications: GB2626-2006, basically in line with CE EN149: 2001 + A1: 2009 FFP2 technical standards.
http://www.kn95factory.net/