1.(AL2O3)content >28%. 2.Basicity%:40-90 3.Water insoluble matter%/<1.0 4.PH( ... Africa, Australia, the United States, Canada,Brazil and other countries. PAC series of different degree of polymerization of the composition of ... polymerization of aluminum ions and colloidal particles in water with high efficiency and power in and bridging flocculation function, can effectively ...