Its other name is Fast extrusion furnace black; FEF

about the Physical Properties, this item, the surface is very smooth, high structure. Among soft carbon black, its strength-adding power is the best.

about usge, It's used in tyre, side tyre, inner tyre and compressed rubber stuff.

about Function, This item applies to natural rubber and synthesi syntheticalrubberItiseasy to disperse, it can strong strengthen rubber stuff. Fast extruding, small swelling mouth, the surface is smooth. Vulcanizate can stand high heat and heat conduction is fine, elasticity and rebounding are excellent. When used in butyl inside tyre, it's better to use together with N660.