Look at the filter element material
　　The main filter material of air filter element is filter paper. Now filter element filter paper mainly USES domestic paper and imported paper. Both domestic and imported paper have good filtering performance. Generally, the filter paper of genuine filter element is uniform in color and flat in surface. But the inferior filter element filter paper color is not uniform, paper hair, texture is very poor.
　　This article is organized by dongguan oneness filtration technology co., LTD