Fe no less than 50% higher is appreciate S no less than 20% higher is also acceptable K2O+Na2O less than 0.20% Al2O3 less than 2.0% P less than 0.1% TiO2 less than 0.15% SiO2 less than 7% ZnO less than 0.15% Weighing average less than 0.15% in the certain month F less than 0.1% AS less than 0.1% Weighing average less than 0.1% in the certain month USD price for CNF Qingdao . Show More