In recent years, global warming, environmental protection and comfort requirements of the automotive, energy, emissions and NVH (noise, vibration and smooth) is the main topic of the auto industry. How to improve fuel efficiency and reduce emissions, improve the maintenance cycle has been a goal of the automotive industry research, including multi-valve technology (Multivalve Engines, MVES) and variable Mun (Variable Valve Timing, VVT) technology, catalytic converters, 42 V power / starter motor integration (integrated starter alternator, ISA), DI diesel engines and 240,000 km or 300,000 km maintenance cycle. These technological advances to the performance requirements of automotive components has correspondingly increased and harsh, automotive transmission belt is no exception. In order to adapt to these changes, and some foreign manufacturers of the famous V-belt drive vehicle with a number of improvements and improve performance.