Glass fiber needle felt filter material is a kind of filter material which is made of glass fiber reinforced glass fiber composite needle with a certain proportion of glass fiber. It has the characteristics of high temperature resistance, high strength, corrosion resistance, wear resistance and folding resistance. It can be used for a long time at high temperature at 240 degrees C, and the temperature can be up to 300 C for a short time. It is widely used in iron and steel, cement, electric power, nonferrous metal, waste incineration, asphalt concrete mixing, chemical industry and other industries. It is suitable for pulse and high speed back blowing. It is the most widely used filter material in high temperature bag type dust collector.