Specification :

Chinese Silicon Metal lump 10-100mm, 90% min , packed in 1000kg big bags.
Si 98.5% 551, Fe: 0.5% max, Ca: 0.10% max

Si 99% 441, Fe: 0.4% max, Ca: 0.10% max

Si 99.4% 3303, Fe: 0.3% max, Ca: 0.03% max

Si 99.6% 2202, Fe: 0.2% max, Ca: 0.02% max