Precision filter (also called security filter) , the shell of the cylinder is generally made of stainless steel, and the inner part is made of tubular filter elements such as PP melt-blown, wire-burned, folded, titanium filter core, activated carbon filter core, etc. , according to different filter media and design process to choose different filter elements, in order to meet the requirements of effluent water quality. Used for solid-liquid separation of all kinds of suspensions, high environmental requirements, high filtering accuracy of liquid medicine filtration, wide range of application, suitable for medicine, food, chemical, environmental protection, water treatment and other industrial fields. This product is mainly used to remove oil, liquid water and dust from Compressed air. The utility model has the advantages of high efficiency, convenient use and low running cost, etc. . This product is divided into C, T, a grade, C filtering accuracy ≤3um, remove 99.999% of the water, filtering accuracy ≤0.01um, remove 99.9% of the water.