I produced a cartridge filter, also known as the new multi-purpose precision cartridge filter, which consists of two parts: a filter and cartridge. Has been widely used in water, oil, paint and other liquid purification and machinery, metallurgy, chemical, textile, printing and dyeing, electroplating, medicine, food and other industries in the solid-liquid separation. Precision filter filters, liquid to be filtered by the filter inlet pressure, since the outgoing seeped through the filter and the filter layer is filtered into the clear liquid, and then discharged through the outlet. Impurities are trapped in the deep and surface filter, so that the liquid to be filtered to achieve the purpose. Precision cartridge filter material according to customer requirements have SUS304, food grade 316L to choose from, reasonable structure, not only the small size, low cost, traffic, and maintenance, for the core, easy to assemble, filtering accuracy 0.5-100um, traffic for 0.5-200m3 / h. According to user needs can also be produced with different sizes of products. Precision internal filter cartridge filter cartridge can be equipped with an inner core number, 3-pin, 5-pin, 7-pin, 9-pin, 11 cores, 13 cores, 15 cores, 30 cores, 50 cores, such as folded filter length ,,, There are 10, 20-inch [1]