Fe no less than 50% higher is appreciateS no less than 20% higher is also acceptableK2O+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 monthF less than 0.1%AS less than 0.1%Weighing average less than 0.1% in the certain monthUSD price for CNF Qingdao . Show More