As a filtration element, filter bag is a critical part in filtration, to some extent, the quality of filter bag plays a decisive role in the filtration performance. The filtration rating ranges from 0.5 micron to 300 micron, with material in polyester, polypropylene nylon etc., filter bag is suitable for use in various chemical liquid in paint, food, petrochemical, grain and oil, it is acid and alkali resistant, it could be repeatedly used for the high mechanical strength.