We could supply you with all kinds of silicon metal like 553, 441,421,411,4105,4405, 3303,2502, 2202, 1101 etc. We are ... supply you with all kinds of silicon metal like 553, 441,421,411,4105, 3303,2502, 2202, 1101 etc. Standard of Silicon Metal GradeChemical composition(%) Si(≥)Impurities ... ,sizing and packing forms are available upon customer's request. Silicon Metal