Left control valve, the right control valve regulating the operating speed can be suitably, adjusted to a high speed operation is prohibited, so as to prevent accidents.
The operating speed of the left control valve and the right control valve can be adjusted appropriately, and it is prohibited to operate at high speed, so as to prevent accidents.
The operation speed of the left control valve and the right control valve can be adjusted properly. It is forbidden to adjust them to high speed to avoid accidents.<br>