... management system.Iron Casting: Casting Process:Green sand casting, Resin sand casting, Precoated sand casting, Molding machine technology, Lost-foam casting, V-Process casting , Sodium silicate ... :100mm-3000cm Steel Casting: Casting Process:Resin sand casting, Sodium silicate self-hardening-sand technology, Sodium silicate precision casting, Silica Sol precision casting.Casting Material:C20, C25 ...