Filteringparticlesintheairtopreventthedroplets,blood,bodyfluids,secreti***oftheself-absorptionfilterdust;bacterialfiltrationefficiencyisgreaterthanorequalto95%.Applytomedicalprotection.Thisproductisodorless,restrictingbacteria,hasgoodventilation,canbeusedinmedicalindustry,foodindustryetc.)