... /month (timely delivery) 4.1t/bag Product: The ferrosilicon powder 1. Shape: lump , granule , powder , briquetting 2. Size: 0mm-3mm,0-10mm, etc ... . Refractory materials: silicon carbide powder, silicon metal powder...... ;3. Deoxidizer in steelmaking: silicon powder, the calcium silicon powder, silicon carbide powder, ferrosilicon ball, new calcium silicon ...