The first generation of excavators: motor, the internal combustion engine occurs, so that the excavator has advanced and suitable electrical device, so a variety of excavators have been born. In 1899, excavators, the first electric excavators appeared. After World War I, the diesel engine is also used in the excavator, the diesel engine (or motor) driven mechanical excavator is the first generation of excavators. After the machinery, prohibit any person standing in the bucket, Carter used excavators, shovel arm and track, ensure safety in production. Excavator at work, Doosan used excavators, prohibit any person working below the bucket stays within range or radius of gyration or walking, hand in excavators, non-fumble into the cab drivers can not tamper with the train driver shall in order to avoid damage to electrical equipment. Used in excavator used excavator _ Kim Ho (certified) _ excavator 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.