It applied to the wet type, dry type, dry type, high-pressure type such as a different process cast steel, cast iron ... Hua Wei" brand casting bentonite applied to the wet type, dry type, dry type, high-pressure type such as a different process cast steel, cast iron ... : (1), by adding small quantities, high intensity; (2), good air permeability; (3), hot wet tensile strength of high ability of ...