In the last century, when we were just young technician, just had a job already follow the predecessors of pile driving equipment manufacturing, engaged in pile driving equipment manufacturing industry. The time lag, the communication between enterprises is not very competitive. Everyone just stuck with some old products, decades made over and over again. Influenced by the environment, the time of the users are rarely put forward special Suggestions and requests.With the development of recent years, especially the large-scale construction of urban high-rise building, China's vast, complicated with different geological conditions. Not only increased the demand for rig number, and the functions, specifications and characteristics of drill is more demanding extensive requirements are put forward.Driven in a new market, in 2006 in the cradle of pile driving machinery, zheng ?
