... are professional manufacturer of ferro silicon,ferro silicon magnesium,calcium silicon,ferro silicon barium,ferro silicon aluminum,ferro silicon magnesium cored wire ... 2.0%, Mg 5.0-7.0%, Si 45-48%, Fe rest Re 0.5-2.0%, Mg ... 6.0-8.0%, Si 45-48%, Fe rest Re 2.0-4.0%, Mg ... 6.0-8.0%, Si 45-48%, Fe rest Re 2.0-4.0%, Mg ... 7.0-9.0%, Si 45-48%, Fe rest Size 10-50mm or 10-100mmPacking 1mt ...