Shaoxing Change Auto Synchronizer Ring Co., Ltd. is a manufacture enterprise which specializes in producing the mechanical type auto synchronizer toothed rings and copper products. Our firm has an annual production capacity of 1.5 million pieces of synchronizer toothed rings and 4 million tons of copper products. Our firm receives the production tasks from over 300 domestic and overseas customers. Our firm occupies more than 70% of National Automobile Accessory Market. On the basis of having 100 odd domestic model lock unit rims, our firm successively develops such goods as several kinds of...