Character: This product is the most widely used hard wearing carbon black, iodine absorption number 82g /kg and DBP Adsorption No is 102cm 3 /100g , its wearing ability is less than super wearing carbon black but better than channel black. Application: can be used to produce tread rubber, cord fabric rubber, tyre inside rubber etc and all kinds of rubber industrial products. Using method and function: This kind of carbon black can endow the rubber with high tensile strength and high tearing toughness, wearing ability and flexibility. The rolling loss of this kind of carbon black is only larger than N351 and is smaller than other 300 series carbon black. Its disperse and extrudability is also very good, suitable for all kinds of synthetic rubber and nature rubber.