The separation and purification is the process of purifying products with solid-liquid separation technology, Chromatography and Microfiltration,ultrafiltration,nanofiltration,reverse osmosis technology and Concentrate,Freeze drying,Crystallization.

Membrane technology is widely used in the extraction process of modern pharmaceutical industry. It has been widely used in the separation and purification of Antibiotic, Animal tissue extraction, Macromolecular antibody, Protein drug,polypeptide,traditional Chinese medicine,plant extraction and chemosynthesis.

Research and application of membrane technology in food technology involve Milk concentrate, whey separation, and soft cheese production in dairy processing ; Microfiltration,Ultra refining of wine and alcoholic beverages,Clarification and concentration of fruit juice beverage in fermentation industry; Filtration and concentration of tea, stevi, etc.

It involves almost every field of wastewater treatment, including electrophoretic paint wastewater, wastewater treatment in the fields of petroleum, chemical, textile, food processing, paper making, medicine, machinery processing, etc.