Medium efficiency nonwoven filtration fabric is based on the needling techonology, then dip into resin adhesive. The filtration efficiency is 80%-99%. The air filter belongs to g4 according to the European standard classification and it is mainly used in frame-plate filter, heavy truck, engineering vehicles filter elements, compressors air filter, gear oil filter and engine oil filter.Medium efficiency non-woven filtration fabric has good elasticity and solid structure, so it can be washed for many times. The non-woven filtration fabric can be customized according to the requirements, such as color, width, hardness, ventilation property and filtration efficiency.