1.Hydraulic Techs Energy Saving, Durable, Noiseless, Movement Smooth. 2. small risk, high return Comfortable, Safe. 6-Dof 4D Dynamic seat ConceptYF-P500 is assembled with 6 hydraulic cylinders, 2 iron platforms, engine, control unit and air cooler. Along with the different combinations of 6 cylinders’ up-and-down movement, the upper platform moves toward 6 dofs, X, Y, Z, α, β, γ, to simulate the ...