Polyaluminum Chloride (PAC) or also known as Alkaline Aluminum Chloride is a water-soluble inorganic macromolecule polymer. Polyaluminum Chloride (PAC) can be mainly used for domestic and drinking water, industrial water supply, oilfield waterflooding, cooling water circulation and back to various sewage (such as municipal sewage, oily wastewater, printing and dyeing wastewater, sewage, papermaking wastewater treatment of steel mill etc) processing. Polyaluminum Chloride (PAC) can also used as the papermaking glue precipitation agent, sugar decoloring clarify agent. Polyaluminum Chloride (PAC) can be used for tanning, pharmaceutical, cosmetic and precision casting, and other fields.