Manufacture Direct Sale Ferrosilicon Manufacture Supplier Silicon Metal. Direct Manufacturer: Own factory with R&D center and 50,000 tons annual processing capacity. Customizable Sizes: Available in 10-30mm, 30-50mm, 50-100mm, or according to customer requirements. Wide Grade Range: Offers grades from 99.7% to 97% purity including Si-1101 to Si-553. ISO9001 Certified: Strict quality control complying with ISO9001 standards and international testing methods. Monthly Supply Capacity: Capable of supplying 5,000 tons of silicon metal per month. OEM/ODM Services: OEM and ODM services available with 3 R&D engineers. Multiple Payment Terms: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments. Fast Lead Time: Off-season lead time within 15 workdays; peak season one month.