Piston compressors, screw compressors collectively referred to as positive displacement compressors, and centrifugal compressor is driven by the motor running at high speed impeller centrifugal force generated, so that the low-pressure gaseous refrigerant is sucked from the side of the inlet, due to centrifugal force generated by high speed rotation of the gas so obtained great kinetic energy from the impeller flows out to reduce the flow rate through the diffuser, compressor with the cross section increases, conversion of energy, a larger gas pressure energy and the pressure increased until discharge. Due to the high rotational speed of the compressor, so that the displacement increases. Suitable for large refrigeration systems. Compact structure centrifugal compressor, refrigeration compressor large price, light weight, smooth running, low noise, not mixed refrigerant lubricants during operation. From the Government Work Report "two sessions" as well as numerous proposals difficult to see, whether it is reform or to cure haze, natural gas is still the country with the delegates attention. Natural gas as a clean energy Cottle quality air compressor, both livelihood, but also in our air pollution, promotion of new energy vehicles and other aspects play an important role. Therefore, the two sessions in natural gas and related industries has been placed more expectations. In the new energy supply system, natural gas for its clean, efficient, and other advantages. Premier Li Keqiang in the previous government work report, the explicit proposal to exploitation of shale gas, coal bed methane. Total energy consumption control air compressor repair, strengthen key areas of industrial, transportation, construction and other energy saving. Actively develop recycling economy, vigorously promote industrial waste and household waste into resources. National Development and Reform Commission deputy director of the National Energy Bureau Nur Bekri Bekri also said that raising the proportion of natural gas consumption is one of the priorities to promote energy supply revolution. Topics include the implementation of gasification urban livelihood projects, urban residents in 2020, the basic use natural gas; expanding the scale of imports; the steady development of the natural gas transportation; moderate development of natural gas; speed networks and gas storage facilities, natural gas by 2020 trunk pipeline mileage of 120,000 kilometers or more. In addition to government concerns, community representatives also made a number of proposals for natural gas or related recommendations. Air compressor parts, air compressor Qin Wei, a leading brand of air compressor (certified), the compressor is provided by Compressor Co., Ltd., Xianyang Qin Wei. Xianyang Qin Wei Compressor Co. (www.xykyj.cn/) is Xianyang, compression, separation equipment leader, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Qin Wei Air leadership with the staff warmly welcome all inquiries negotiations to create Qin Wei Air a better future.