Quality standard of Y-base Heavy RE Ferrosilicon Alloy product: Element ProductYSF-1 ProductYSF-2 ProductYSF-3 ProductYSF-4 ProductYSF-5 ProductYSF-6 Y/TREM 45% 45% 45% 45% 45% 45% RE 10-15% 15-20% 20-25% 25-30% 30-35% 35-40% Fe 18-24% 18-24% 16-22% 16-22% 14-18% 14-18% Si 45-50% 45-50% 43-48% 43-48% 40-45% 40-45% Ca 6-10% 6-10% 6-10% 6-10% 6-10% 6-10% Specification: Metal ingot, mechanically polished, the detailed specification can be customized in size according to your request. Packing: In sealed doubled polyethylene bags and filled with argon, the bags are packed in iron drum containing 50kgs net each. Note: We also provide customized product.