LMM GROUP self-developed formula of Upper nozzle products adopts plate-like corundum, white corundum, silicon carbide, metal aluminum, high-quality magnesia and other main raw materials, selects scaly graphite carbon source with good oxidation resistance, and adds a small amount of antioxidant to improve oxidation resistance. Performance, with phenolic resin with high solid content and high residual carbon as binder. After high-pressure molding, it can be dipped according to the conditions of use.

It has the characteristics of good thermal shock resistance, high temperature strength, corrosion resistance and erosion resistance; long service life and a wide range of steel types.