Silicon metal lump 1.Factory price 2.Quality Guaranteed 3.Two professional factories since 1996 4.ISO 9000,CCIC,CIQ Silicon Metal Lump1,Factory price 2,Strict quality control low P & B 3,Si:99.0% min Fe:0.4% max Al:0.4 Ca:0.1%4.Size:10-100mm 90%min or as the client's requestWe are professional manufacturer of silicon metal in china,mainly producing 553,441,2202,3303,we appreciate long-term and ...