Recommendedusage:Fangdunhalfmask+2202NKN100filtercottonor6101Pfiltercartridge.
    Replacementsuggestions:Theservicelifeofthemaskismorethan365days(sparepartscanbereplacedifdamaged).Thefiltercottonshouldbereplacedintimewhencontaminationisfoundthroughtheobservationwindoworwhenyoufeelstuffywhilebreathing.
    Forexample,intheproductionandoperationofagricultureandvariousindustrialandminingenterprises(suchascropharvesting,drying,processing,mining,polishing,smelting,etc.),alargeamountofdustwillbegenerated.Theaveragedustconcentrationrangesfrom200to500mg/m³,whichisextremelyharmfultothehumanbody.Whenworkinginsuchadustyenvironmentfor8hours,itisrecommendedtoreplacethefilterelementintimeifyouexperiencebreathingdifficulties.