As a component of traditional Chinese medicine in the field of modern medicine and biotechnology, biological products play a very important role in preventing and treating diseases, protecting and improving people's health.  Biological products require multiple biological processes, purification and analysis techniques to obtain the target.  Physical filtration, with natural advantages, can creatively complete the task, is an indispensable process of biological products  

Biological products, with microorganisms, parasites, animal toxins and biological tissues as starting materials, have too many uncontrollable factors such as most sources and production processes.  The amount of biological impurities expressed is too large and cannot be accurately predicted. The number of impurities and quantities in the raw liquid can only be controlled by the items specified in the quality standard. It is difficult to control other impurities comprehensively, and comprehensive control is the basis of benign production