The needle filtration is made of glass fiber and other chemical fiber, and is produced thorough bale opening and fine opening, carding, web forming, and needle loom. This three-dimensional porous structure leads to high efficiency and low resistance and longer service life on Iron and steel industry and Cement Industry. After the chemical treatment of special surface finishing technology, the glass fiber composite needle filtration has excellent performance, such as high-temperature resistance, corrosion-resistant, wear resistance, break resistance, water resistance, oil resistance, electrostatic resistance, easy cleaning features, more than 99% dust collection efficiency.