... their greatest value.Our main products cover: Silicon metal, Pure magnesium metal, Magnesium alloys, Mg powder, Mg butt end, etc.We could ... supply you with all kinds of silicon metal like 553, ... 4405,4105, 3303,2502, 2202, 1101 etc. Standard of Silicon Metal GradeChemical composition(%) Si(≥)Impurities(≤) FeAlCa 55398.500.500.500. ...