... you need 45% 65% 72% 75% Ferro Silicon , We have our own two big factories of Ferro ... have our own two big factories of Ferro silicon products , totally 12 furnaces in Pingluo, Ningxia ... yearly... The features and specifications for ferro silicon are as below:1.Features:The appearance of Ferro ... good deoxidizer and most steel kind use the Ferro Silicon for Deoxidization;In steel smelting, it is used ...