Adopting high modulus and low shrinkage polyester cord, the Cogged V-belt can resistant to thermal expansion and maintain tension. Mixing rubber with staple fiber makes the lateral stiffness of the belt greatly enhanced and has a good wear resistance, good heat resistance and oil resistant performance. The Cogged V-belt running on the small pulley has better stability and soft performance so the belt has a good match with pulley.  It increases the performance of heavy-loading in large diesel engine and the high speed of small diesel engine and reduce the maintenance cost. The main models are AV10, AV13, AV17, AV20, etc.