... requirement 3.advanced technical equipment 4,riched engineer DUCTILE CAST IRON:1.Silicasol process precision casting and soluble glass precision ... casting2.Material: Grey iron,Ductile iron, Steel, Stainless Steel, Carbon steel, Alloy steel etc...3 ... etc,hope we could have a very nice start and build long-term relationship.We will reply in 24 hours.