1,PP super-thin fiber filtering media 2,ISO9001:2000,CE,EN779 certification. 3,acid, alkali-resistant, high melting point. Functions of products1, as a kind of pure hydrocarbon, the products are harmless, smellless, light and white2, even distribution, soft, dense, high strength, low resistance and high efficiency.3, acid-resistant, alkali-resistant, high melting point (167-174)°c and stable ...