1.double filter 2.Lens anti-mist 3.large field of view 4.full face gas mask 1.Broad view2.The material ... arsine dichloride,Bromethane,cyanogen chloride,hydrogen phosphide,Diphosgene,Lewisite,mustard gas,poisonous smoke and fog etc(CNCL)3.0501.123P- ... Chloropicrin,chloromethane,Chlorine,nitro-paraffin,benzene(C6H6)16.2115 Z-K-P3Green with pink stripeAgainst ammonia and hydrogen sulfideammonia, hydrogen ...