ferrosilicon, silicon metal, ferromanganese
(FeSi)
Si: 68%, 70%, 72%, 75% min
Al: 0.5%, 1.0%, 1.5%, 2.0% max
Size: 1-10mm,10-50mm,50-100mm, 90% min or at your options
Si: 441,553,2202,3303
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