... of silicon metal like 553, 441,421,411,4105,4405, 3303,2502, 2202, 1101 etc. We are devoted to providing our ... kinds of silicon metal like 553, 441,421,411,4105, 3303,2502, 2202, 1101 etc. Standard of Silicon Metal GradeChemical composition ... packing forms are available upon customer's request. Silicon Metal 3303