... 1.nbc gas mask 2.ISO9001,GB2890-1995 3.supply sample 1. Product Information Coated with anti-mist and abrasionproof inside and ... acid, cyanogens chloride, arsine, phosgene, chloropicrin, bromomethane, lewisite gas, mustard gas, sarin, vx gas, toxic smoke, and fume, benzene, hydrogen phosphide, chlorine, ... 2.3 fillets can not be curl or be pressed inside the mask4.2.4 the stretching forces on each ...