Our Ferro Silicon is of high quality and our price is very reasonable,if you have any demand, welcome to contact us Our F SI70-75% minAl1.5% maxP0.05% maxC0.2% maxS0.02% maxSIZE10-100 OR AS PER REQUIREMENT.erro Silicon is in high quality and our price is very reasonable,if you have any demand welcome to contact us (fesi) Ferro Silicon 70-75 (ferro Alloys)