... maintain convenient. It has three operation mode, adjust, manual operation and semi-automatic, and also two process specification, ... ,Main cylinder5,Stroke limit device6,Hydraulic pump is constituteed with oil tank, axial piston pump,electric motors,two cartridge valves, ... protectionForu.Main mating supply1.High pressure oil pump Qidong High pressure2.Hydraulic system Shandong Taifeng(Sino-us joint)3. ...