1. Appearance : Black Power or Granular 2. packing: 25kg/50kg per wovn bag with plastic film line 3. description of the goods: 1). Carbon black N220 Characteristic:Good abrasion resistance and crack resistance. Application: Enhanced carbon black;Tire tread, high quality industrial rubber products and high load conveyor belt. 2). Carbon black N330 Characteristic:Good abrasion resistance and middling lag. Application: Tire side;Outer layer of roller;Tire belted layer;Industrial rubber products;Car tire tread. 3). Carbon black N550 Characteristic;It boasts the best reinforcing performance among the semi-reinforcing varieties, excellent extruding performance as well as low reilient rate. Application:Tube;Extruding bar, seal and moulded rubber product; Tire body and inner tire compound. 4). Carbon black 660 Characteristic:Compared with N550, it features lower reinforcing ability, smaller structure, higher lips expansion and greater fill amount. Application:Tire body and inner tire compound;Normal moulding and extruding application;Monolayer moistureproof product.