The rapid development of electronic technology, automation technology in the excavator. 1970s, used excavators purchase price, in order to save energy consumption and reduce environmental pollution, Kunming used excavators acquisition, so excavator easy operation and safe operation, the excavator reduce noise and improve driver working conditions, gradually electronics and automatic control technology on mining. With the improvement of the efficiency of the excavator, energy saving, easy operation, safety and comfort, reliability and durability and other aspects of performance requirements, prompted the hydraulic integration application, traded in the acquisition of second-hand excavator excavator, and make all kinds of Performance has been a qualitative leap. Anti-corrosion measures weld seam completely polished, rust and coated with rust. In the construction site excavation, the existing weld corrosion, the actual situation may choose to manually dig roots rust, the disadvantage is a greater labor intensity, high labor costs; we can use pickling rust way, that organic acids The main Chicco, with corrosion inhibitor, tables and active agent, rust remover, rust inhibitors and film-forming agent composites, to prepare a pickling solution has rust, rust and paint functions, by cleaning reach Rust and corrosion purposes. Moreover, in the course, but also pay attention to the excavator constantly in a clean and dry environment, maintain good ventilation, and remove aggressive gases and moisture. Used excavator acquisition of recycled, Kim Ho used excavators, used excavators Haikou acquired 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.