Hydraulic Excavator General by the working device, the upper body and lower body composed of three parts. According to its structure and purpose can be divided into: Crawler, tire type, walker, hydraulic, semi-hydraulic, full swing, non-full rotation, general-purpose, special type, articulated, telescopic boom and other types. Working device is a direct means to complete the mining task. It consists of the boom, arm and bucket three parts hinged together. In order to meet the various needs of different construction jobs, direct cash market used excavators, hydraulic excavators can be equipped with a variety of work equipment, such as digging, lifting, loading, smooth, clamps, dozer, hammer, professional second-hand mining machine Spot, auger drilling and other work tools. Founding of New China to the former Soviet Union and other mapping imitation W501.W502.W1001.W1002 1930s - 1940s type mechanical shovels mainly used excavators Spot, started China's excavator production history. At that time, the need of national economic construction and has established more than a dozen excavator production plant. 1967, China has independently developed a hydraulic excavator. Early successful development of products mainly include Shanghai Construction Machinery Factory of WYl00 model, W4-60 Guiyang mining machinery plant type, mining machinery plant in Hefei WY60 type excavators. Then appeared Yangtze excavator plant WYl60 type and Hangzhou of WY250 excavator and other heavy machinery. They took a very important step for the formation and development of Chinese hydraulic excavator industry. Used excavator Spot merchants _ _ Kim Ho-hand excavator used excavator direct cash provided by Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) is the Shanghai Minhang District, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Kim Ho used excavators in leadership with the staff warmly welcome all inquiries negotiations to create jinhao used excavators better future.