Zhangjiagang Free Zone Yonda Machinery Co., Ltd. in Jiangsu Province Zhangjiagang Free Trade Zone is only 100km away from Shanghai. Our primary production factory is located in mainland China. Zhangjiagang Free Zone Yonda Machinery Co., Ltd. is a company with world-advanced processing and testing abilities of Taiwan owned enterprise.Our main products are final drives, swing gearboxes, hydraulic breakers, and hydraulic hammer drills . The company has a comprehensive set of high precision production equipment with strict quality management and has passed ISO9001 international quality certification. The company always strives for quality first as our highest priority and gradually establish excellent after-sales support. We are committed to constantly improving our process to meet and exceed new industry standards.