Ceramic film is an asymmetric film made of metal oxide materials (alumina, zirconia, titanium oxide and silicon oxide, etc.) by coating and sintering processes. The ceramic membrane has the advantages of small pore size, narrow pore size distribution, high separation accuracy and high efficiency. Able to acid and alkali resistance, organic solvent, high temperature resistant, resistant to biological pollution, high mechanical strength, and the ceramic membrane separation process is simple, low energy consumption, easy operation and maintenance, long service life, etc, have been successfully applied in chemical industry, petrochemical industry, biological engineering, environmental engineering, food, fermentation and pharmacy, water resources, and many other fields, To realize the process of separation, clarification, purification, concentration, sterilization, desalination, etc. The company is developing a new generation of high-performance ceramic membrane for industrial process field, and has developed ceramic microfiltration, ultrafiltration and nanofiltration membrane products, which have the characteristics of high throughput and anti-pollution.