The Hebei Province Anping County Chang An petroleum chemical industry equipment limited company had been established in 1996, which is located in anping county .It is a modernized enterprise established by the filter designing experts and making experts which is a whole system with the researchn the design the production and the sale departments . The company has a capable team . There is not only many experts but also the advanced production equipment and the perfect central laboratory kinds of experiments and checker and perfect post-sale service . The products are sold to America Egypt England Holland Mongolia Australia Bangladesh Pakistan Thailand Indonesia Uganda Germany Japan Greece and so on and many national provinces and cities .