... filter element is range from 3500h to 5200h,4. Initial pressure differential ≤0.02Mpa. 10 reason to choose us Reason 1all our ... manufacturing and 3 years exportation experience and have exported to all over the world Reason 3Various kinds of filters ... 7ISO9001 management system certification passed and our products have export to more than 15 countries, including Canada, USA, Australia, Italy, ...