Polyaluminium chloride production of the domestic development of the more stable Polyaluminum chloride as one of the most commonly used water treatment agent, its production technology has been very mature, comparable with the most advanced technology in the world. However, the price of domestically produced polyaluminium chloride is much lower than that of imported polyaluminum chloride. The main reason is that China has a very abundant raw material for producing polyaluminum chloride, and the price is low. Because of this, domestic PAC producers are too small and have obvious regional characteristics, which is related to the convenience of obtaining raw materials of PAC. The current size of the domestic aluminum chloride manufacturers have thousands, production technology has been very mature. Polyaluminium chloride use: China's polyaluminum chloride is mainly used in industrial sewage, water purification and other fields, the two areas of consumption accounts for about 70% of total consumption. The proportion of industrial water purification in the use of more than 40%; tap water purification and domestic sewage treatment in the proportion of about 30%; industrial circulating water and river reservoirs accounted for 20% of the purification; the other 10%.