... %, 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 ... port,China Inspection CIQ or SGS Standard GB/T 4138-93 ferro silicon magnesium rare earth alloy ...