We are the largest and specialized aluminium sulphate manufacturer and ecportation base in china .We have been in the field for 9 years.The product we mainly produce include powder, flake, granular, lump etc.The following is the specification of Powder aluminium sulphate 1 Powder aluminium sulphate 15.8% min Al2O3: 15.8% min; Fe: 0.5% max; PH: 3.0min; Water Insolubles: 0.15% max; Size: Below 10mesh-100mesh min; 2) Powder aluminium sulphate 17% min Al2O3: 17% min; Fe: 0.005% max; PH: 3.0min; Water Insolubles: 0.15% max; Size: Below 10mesh-100mesh min; Use: Used in papermaking , printing and dye , tanning leather , fire-fighting equipment , drug and wood preservation , etc Contact: sufieer at sanfengchem dot com