It can also mount at the back of the truck chassis, and enable the crane to lift 100% load capacity over the back.
起重机也可设置在卡车底盘的后侧，这样就可使起重机在卡车后侧之上实现近乎100%额定装载能力。
2
The safety valve can make the lifting fluid-pressure drive circuit of a fork lifttruck or a crane obtain not only high efficiency ascending speed, but also reliable and safe descending speed.