... with all kinds of silicon metal like 553, 441,421,411,4105,4405, 3303,2502, 2202, 1101 etc. We are devoted to providing our ... powder, Mg butt end, etc.We could 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 ...