Closed loop control principle: Optional single, double or multiple columns operation, PLC real time control for high accuracy;

Human engineering: Each column is equipped with control system, applies to six, eight or more columns; This set is composed of 1 master column and 3 slave columns; Each column is equipped with hydraulic power unit.

Safety precautions: Mechanical and hydraulic double locking function when loading, overload protection; Up/down limit switch

Failure self diagnosis function: When seriously asynchronous or column power failure, the lift stops immediately.