Hunan Changhe Machine Co., Ltd is a professional manufacturer in Hydraulic Static Pile Driver integrating with teaching, and researching. Supported by the Hydraulic Machine and Control Technology Research Institute of CSU-a famous universitgy of China, Changhe has won one National Scinence & Technology Invention award, two National Science & Technology Progress award, and a dozen of Science & Technology Progress awards of Hunan Province. We are certificated with IS09001:2000 already, and has been honored with reputated company of AAA grade, the Ten Excellent Brand of Pile Constructing Machine of China in 2005. Changhe ZYB series Hydraulic Static Pile Driver includes over 10 types machine with piling force range of 100-1200t. With high effiency and low energy consumption, 6 patents of technology, Changhe machine is the leading product in the field of pile driver and mass exported to Southeast Asia, Russia, and area of Middle East etc. No pollution, no vibration, noiseless, high piling rate and excellent piling quality are the remarkable characters of Changhe Hydraulic Static Pile Driver.