... nonwoven air filter -PP meltblown -99.97% filtration -10-60gsm 160cm-width -NELSON lab ,NOISH ,TSI-8130 tester Meltblown nonwoven air filterwe ... 5,warmth retension, noise isolation 6,superior absorbency,industrial micro-dust maskSpecificationBFE95,BFE98,BFE99 for medical mask N95 ... N99 N100 R95 R99 R100 P95 P99 P100 for industrial maskStandardASTM F2100-07,NIOSH,CE EN149:2001,AS1716InspectionAmerican ...