KN95 Mask with Air Valve Non-woven Breathable Masks Dust-proof Anti-Fog Anti-PM2.5 Breathing MaskName: KN95 labor protection mask Function: anti fog, PM2. 5, dustproof,etc. protect your health! Applicable object: adult Safety standard: China GB2626 2006 standard Filtration efficiency: non oily particulate matter filtration rate> = 95% Product storage: storage temperature 20 38C, less than or equal to 80% RH in spring, need to be stored and well ventilated, protected from light, dry environment, and away from pollution sources Protection level:
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KN95 Mask with Air Valve Non-woven Breathable Masks Dust-proof Anti-Fog Anti-PM2.5 Breathing Mask