The product is placed in the furnace inlet or outlet, its purpose is to aluminum liquid into thesmelting furnace or the melting furnace molten aluminum into aluminum liquid transport package.This product adopts the high nitrogen compound ceramic materials company independently developed and produced. It has good insulation properties, corrosion resistance, high temperature resistant, non sticking aluminum aluminum liquid, no pollution, the advantages of high strength and long service life etc.. Can be customized according to customer requirements.