It is applicable for conditions that continuous temperature is below 260 Centigrade, and instant temperature is below 280 Centigrade. Property of oxidation resistance is good, and allowed PH value range: 4-9. Relative Humidity is 55% . It is suitable for the dust collection of the highly temperature flue gas of, Cement production, coal boiler, garbage incineration, steelmaking furnace, blast furnace gas production, the ferroalloy furnace, etc.