We are full line of air filters manufacture located in ShangHai city. We are able to provide different efficiency and different size of pre filters, bag filters and Hepa filters. Our full line of air filters not only supply in China domestic, We also ship them to worldwide. Keep products with top quality is always in our mind, our state of art manufacturing facilities are equipped with 1200 M² clean room and international standard test equipments- ASHREA 52.2 , EN 1822 & smoke---etc. leakage test. Our products are Manufactured according to ISO9001-2000.