It is a furnace black with large particle size and high structure, with particle sizes of 100-130nm, mainly used as a reinforcing filler in rubber. This product can be filled in large quantities in rubber compounds, boasts good processing properties, and has minimal extrusion shrinkage. The vulcanized rubber exhibits high elasticity, low heat generation, minimal deformation, good low-temperature performance, and relatively high tensile stress, but lower tensile strength and elongation at break.