We provide various needle punched filter material (polyester needle felt, polypropylene needle felt, water-oil repellent needle felt, FMS needle felt, Metamax needle felt, PPS needle felt, coated needle felt), which high hole rate, high efficiency of cleaning and low density of gas, after heating, singeing and coat treatment and with a smooth surface, extensive use, can filter acid, alkali, water, oil in normal or high temperature.