* Tower crane is mainly used for housing construction in the vertical and horizontal transportation of              materials and the installation of building components.
* It is widely used in infrastructure construction, high-speed rail, oil fields, large ports, nuclear power, wind        power and other construction fields.
* According to the shape of the tower crane, it can be divided into topkit type, topless type and luffing boom    type.
* According to the work efficiency, it can be divided into ordinary type and frequency conversion type.

Main parts