Poly aluminum chloride by two major advantages to win market sources of filtered water PAC PAC rely on these two advantages to win the market, the progress of social civilization continue to guide people to improve water quality requirements, drinking water, industrial water, industrial Wastewater and municipal wastewater treatment have become a topic of greater concern to the public. Due to the low price and high demand of PACF, users are very optimistic about the development prospects of the PAFC product due to its mature technology and low-cost raw materials . Filter water purification card efficient polymerization of aluminum chloride and iron chloride PAFC as the two major advantages of water treatment: performance and economic performance advantages, the prominent role in the industrial advantages, wide range of applications, the amount of traditional flocculant can be reduced by 1 / 3 ~ 1/2, the cost can be saved more than 40%. In terms of economic advantages, the scale of production enterprises in our country is small. Some industrial clusters have formed in some areas. There are many producers of PAC- Aluminum and iron products PAFC liquid annual output has reached more than 20,000 tons, the annual output of solid PAFC products also reached 10,000 tons, more and more customer base, the product more and more acclaimed.