Established in 1998 ,China Shuangyuan Construction and Machinery Co., Ltd. has gained immense expertise in supplying & trading of Undercarriage parts: bottom roller, top roller, sprocket etc. The supplier company is located in Xiamen, Fujian and is one of the leading sellers of listed products. Buy Undercarriage parts: bottom roller, top roller, sprocket in bulk from us for the best quality products and service.