... rigidity load frames, high-precision load sensors, electric-hydraulic servo closed loop control system (including function generators ... (imported oil pumps), one-way valves (Leemin Hydraulic), overflow valves (Leemin Hydraulic), hydraulic gauges (Leemin Hydraulic) etc. which also have functions ... to the demand of this testing machine, electric-servo hydraulic valve ( 63L ) made by MOOG Company and ...