contact: martin zhang e-mail: huanhairubber@yahoo.com.cn n220: characteristic: good abrasion resistance and crack resistance. compared with n110, its stress at definite elongation is lower and decentrality is much better. typical application: enhanced carbon black; tire tread, high quality industrial rubber products and high load conveyor belt. n234: characteristic: excellent abrasion resistance. high dynamic stability. low resilient rate. typical application: tire tread of the high-end car; high quality industrial rubber products and high load conveyor belt. n326: characteristic: low stress at definite elongation. high elongation rate at break; good fatigue resistance; large tear strength. typical application: engineering tire tread; steel wire belt compound; conveyor belt; industrial seal and seal product. n330: characteristic: good abrasion resistance and middling lag. typical application: tire belted layer; tire side; solid tire; outer layer of roller; industrial rubber product; car tire tread n339: characteristic: good abrasion resistance; good extruding performance typical application: car tire tread; industrial rubber product and transportation. n375: characteristic: compared with n339 and n347, it has better reinforcing performance, lower modulus and higher lag. typical application: the tire tread of car and truck; surface layer of conveyor belt; industrial rubber product. n351 characteristic: good abrasion resistance; good extruding performance typical application: car tire tread; industrial rubber product and transportation n539: characteristic: compared with n550, it features lower reinforcing ability, smaller structure, higher lips expansion and larger fill amount . typical application:tire body and inner tire compound;exturding bar,seal and moulded rubber product n550: characteristic: it boasts the best reinforcing performance among the semi-reinforcing varieties, excellent extruding performance as well as low resilient rate. typical application: tire body and inner tire compound; tube; extruding bar, seal and moulded rubber product. n660: characteristic: compared with n550, it features lower reinforcing ability, smaller structure, higher lips expansion and greater fill amount. typical application: tire body and inner tire compound; normal moulding and extruding application; monolayer moistureproof product.