As a component of the internal combustion engine, it plays a very important role in the lubrication system. It can filter out impurities such as metal debris, carbon particles, and gradually generated colloid from the engine oil that are generated during the combustion process of the engine and mixed into the engine oil. These impurities can accelerate the wear of moving parts and easily cause clogging of the lubricating oil circuit. The oil filter ensures the normal operation of the internal combustion engine, greatly improving its service life, and also extending the service life of other components.