Zhingxin machinery development co.,ltd is a manufacturer whose focuses on undercarriage parts at reasonable price.Such as Sprocket、Down oller、Upper roller 、Idler、bucket teeth、swamp shoes. Established in 1989, ZHONGXIN MACHINERY Development has been built on a solid foundation of customer support. We continue to hold our reputation of high quality products & service support in the highest regard. Our commitment to quality and customer service has attracted the attention of some of the worlds leading manufacturers and tradesmen. We continue to look for and forge new alliances with manufacturers and tradesmen who feel they can benefit from our products support. Require of the clients is our command, satisfaction of the clients is the aim of our desire