Fuel-saving research into sought-after skills excavator hydraulic excavator is a high-power devices. The total utilization of energy is only about 20% off. Mechatronics skills in the hydraulic excavator. Monitor the status of excavator operation parameters and analyze, through state control of excavator to progress work together to reach a power saving role. Today's international power is missing, rising oil prices. Save fuel, improve operating power, it means that the progress of the cost of equipment, enhance the market competitiveness of the device. On hydraulic excavators, energy is not just how much progress the intention fuel efficiency used excavators, operating power progress equipment, but also in the progress of equipment reliability. Then to decrease the use of cost effect. Materials show, 40 percent of construction machinery coming from the hydraulic system problems. About 15% of the problems come from the engine. After selection of energy-saving skills. It can make the power system and the power required by the load matching very well, reducing the hydraulic system power loss, progressive utilization of engine power, a decrease of job strength engine and hydraulic components. And progress in the use of equipment reliability. Internationally controlled hydraulic excavator power saving skills seminars, open from the parts and machine won two levels. 2013 annual excavator sales reached 114,783 Taiwan January 9, 2014 issued by China in December 2013 excavator sales of 8,683 sets (including exports), an increase of 20 percent compared with December 2012 year (in November year on year increase 19%). 2013 annual sales reached 114 modern excavator used excavators, 783 units, down 3 percent, slightly better than guessing expert (profit down 5%). December 2013 excavators up by 20% in December 2013 excavators up by the potential impact of a 20% domestic sales continued since August exports reflects better than second-hand excavator sales in December increased by 25% (while exports fell by 19%). 2013 full-year domestic sales fell by 3% (2012 full year on year decline of 38%). Maintain the 2014 full-year sales growth of 8% of constant speculation used excavators, bulldozers but noted the recent slowdown in sales (October / November year on year decline of 33% / 22%) may bring a number of downside danger, since the former history situation, the bulldozer is the leading types of earthmoving machinery market. _ Used Excavator used excavators for sale (Online) _ Gansu used excavators 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.