Ferro Silicon Magnesium is used in foundry industry,our product is very stable. Ferro Silicon Magnesium1: Re 0.8-1.2% Mg 4.2-4.7% Ca 1.5-2.0% Si 45-50% Al<2.0% 2: Re 0.8-1.2% Mg 6.0-6.5% Ca 0.8-1.2% Si 44-48% Al<2.0% 3: Re 1.0-1.5% Mg 5.0-5.5% Ca 2.0-2.5% Si 45-50% Al<2.0%4: Re 1.0-1.5% Mg 5.7-6.2% Ca 1.7-2.2% Si 42-45% Al<2.0% 5: Re 1.5-2.0% Mg 5.5-6.0% Ca 2.0-2.5% Si 45-50% Al<2.0% 6: Re 1.5-2. ...