Rock Machinery co.,Ltd. is located in Liangshan, Shandong , China, the world's largest used truck trading base. The company was established in August, 2010 and currently has nearly 200 employees, including more than 60 professional and technical personnel.We have advanced production equipment and technical team to ensure product quality and on-time delivery. Whether you need to buy a used truck,machinery or a custom trailer, we can provide you with the most professional solutions. Welcome to contact us and let us work together to create a better future!