It is a furnace black with large particle size and high structure, having a particle size of 100-130nm, mainly used as a reinforcing filler for 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 modulus of elasticity, although its tensile strength and elongation at break are lower.