Classification:FFP2 RD The product decription:Ultra-fine fiber electrostatic spray cloth, hot air filter cotton,PPnon-woven cloth,five layers of filtration,effective filtering harmful substances,Butterfly mask design,adjustable ear band,ensure the tightness and increase the mask breathing volume,greatly improve the air permeability,make wearing and breathing more comfortable. Scope of application:It is suitable for the protection of harmful particles such as dust,PM2.5 haze particles,bacteria,droplets and so on.It has the function of preventing wind and cold. Storage conditions:Humidity≤80%，no corrosive gas and well ventilated environment. Notes:1.Do not use it alternately with others.2.This products should not be used in anoxic environment.