Qingdao Hongxu Filter Aid Co., Ltd ,the professional enterprise has been specialized in the R&D, manufacture and export of diatomaceous earth (DE). The diatomaceous earth and its products are used as a filter medium, especially for swimming pools. It is also used to filter beer, wine, syrups and sugar. Other industries such as paper, paints, ceramics, soap and detergents use it as a filling material. The company also deals with activated bleaching earth, perlite, bentonite etc. filter aids.