The filter element can separate the solid particles in the liquid or gas, or make the different material components fully contact, accelerate the reaction time, which can protect the normal operation of the equipment or clean the air. The liquid filter element makes the liquid (including oil, water, etc.) to make the contaminated liquid be clean to the state required by production and life, that is, to make the liquid reach a certain degree of cleanliness.
　　This paper by pingyang chunde auto parts co. LTD