Glass fiber needle felt filter material is a kind of filter material made of glass fiber and a certain proportion of high temperature resistant 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 a high temperature of 240°C and can withstand a short-term temperature of up to 300°C. It is widely used in high temperature flue gas filtration in steel, cement, electricity, non-ferrous metals, garbage incineration, asphalt concrete mixing, chemical industry and other industries. It is suitable for pulse and high-speed back-blowing dust removal methods. It is currently the most widely used filter material for high temperature bag dust collectors.