Conservative and Practical, Hydraulic control embraces to embed set valve integrated system,decrease let out point. Movement reliability,durable and long life span. It is consistent strain to acknowledge with quiet in any case and quiet procedure two create technology,have to guarantee press the capacity of postpone time, The course of working weight might be controlled in allotted scope, receive catches for brought together control. Can acknowledgment manual,Semi-automatic,automatic 3 work frame.