Poly Aluminium Chloride is an flocculant mainly used in the purifying of drinking water. It is also used in the special water treatment, such as removal of iron, cadmium, fluorine, radioactive pollutant, oil slick etc. It could also be used in industrial waste water treatment, such as the waste water treatment of dying industry. It is also widely used in the foundry industry, paper making industry, pharmaceutical industry, leather industry etc