... D,manufacture and sale of hydraulic valves.So hydraulic directional control valve is our main products. At ... ,spaceflight and military area. We divide our valves into two big parts:Monoblock valve(DCV20,DCV40 ... provide different control style,such as handle control(manual control),detent control,pneumatic control,double control,electrohydraulic ON-OFFcontrol,cable remote control,hydrauliccontrol… ...