Porcelain sand filter products select high-quality porcelain clay and a certain number of binder as raw materials,made through pug forming and dry roasting and other processing,is a type of gray spherical filter material,which has high mechanical strength, large specific surface area, low wear rate,developed pore structure,etc performance. More used for power, chemical, oil and filters for water filter and ion exchange equipments. The advantage is expand the adsorption area and improve sewage interception capacity,better effect on the sewage treatment which contain impurities of gel. Also can reduce the amount of backwash,all of the technical indicators are reached by the test standards in the industry.