high grade ,low ferro,low phosphorus silicon products factory price strict quality control timely ... We are professional manufacturer of high purity grade silicon metals in China,With 4 factories in Fujian ... and Guizhou province,and the annualoutput 60 thousand tons for silicon 553,441,3303,2202,2502.we can meet ... let me know.Best Regards,sandy industry silicon metal for metallurgy and chemical