... resistant against most acids, saline solutions and organic solvents, liquid or gas covering the complete acid,neutral and alkali range ... of various kinds of chemical fluids and chemical products:e.g.calcium chloride,Soduim Acetate,ammonia water,Caustic soda ... temperature dusty gas in environmental protection industry; e:Filtration of fertilizer industry,e.g.mixed gas filtration for HNO3 synthesis; ...