Trademark：421#Specificati***：(10-100)mm90%Packing：TonbagAppearance：SilvergrayblockNetweight：1,000kgGrossweight：1,003kgApplicati***:Hardandbrittle,itismadeofquartzwith98.5%SiO2andothermaterialsby***elting,anditisabasicindustrialrawmaterialwidelyusedinaerospace,electronics,chemicalindustry,metallurgy,andinsulationrefractoriesindustries.NameCodeCompositionSicontent(%)Impurities(%)FeAlCaPBMY421>99.2%≤0.4≤0.2≤0.1--)