Film-coated polyester filter cartridge adopts imported PTFE film-coated polyester filter material. Surface filtration, extremely smooth, not easy to adhere, easy to pulse anti-ash. The imported membrane has high precision and good filtration effect. The finest membrane can reach 0.3 um according to the working condition. The end cap skeleton is protected and PTFE aggregates excellent chemical corrosion resistance. The service life of the filter cartridge is very long, and it can reach 2-4 years under general working conditions.Scope of application: welding fume, shot peening, pharmaceutical, cement, tobacco, textile industry.