Carbon black n220 Characteristic: good abrasion resistance and crack resistance. Its stress at definite elongation is lower. Application: enhanced carbon black; tire tread, high quality industrial rubber products and high load conveyor belt. Carbon black n330 Characteristic: good abrasion resistance and middling lag. Application: tire belted layer; tire side; outer layer of roller; industrial rubber products; car tire tread. Carbon black n550 Characteristic; it boasts the best reinforcing performance among the semi-reinforcing varieties, excellent extruding performance as well as low resilient rate. Application: tire body and inner tire compound; tube; extruding bar, seal and mould rubber product. Carbon black n660 Characteristic: it features lower reinforcing ability, smaller structure, higher lips expansion and greater fill amount. Application: tire body and inner tire compound; normal mould and extruding application; monolayer moisture proof product. Packing: 25 kgs in net pp bag, 16mt in the 20¡¯fcl Delivery time: 2 weeks Payment term: t/t, l/c. 25 kgs in net pp bag, 16mt in the 20¡¯fcl.