... load frames, high-precision load sensors, electric-hydraulic servo closed loop control system (including function generators ... The body adopts four columns with hydraulic locking cylinders for realizing control of hydraulic lifting. 2. The maximum traffic ... pumps), one-way valves (Leemin Hydraulic), overflow valves (Leemin Hydraulic), hydraulic gauges (Leemin Hydraulic) etc. which also have functions ...