Precision filters (also known as security filters) are generally made of stainless steel for the cylinder shell, and use tubular filter elements such as PP melt blown, wire burned, folded, titanium filter element, activated carbon filter element, etc. as filter elements inside. Different filter elements are selected according to different filter media and design processes to meet the requirements of effluent quality. Used for solid-liquid separation of various suspensions, with high environmental requirements and high filtration accuracy for liquid medicine filtration. It has a wide range of applications and is suitable for industrial fields such as medicine, food, chemical industry, environmental protection, and water treatment.