Assembly building engineering, also known as PC project construction, is a production mode combining production industrialization with construction installation and assembly. It is a new construction mode which conforms to the development trend of construction industrialization and puts forward higher requirements for lifting weight and accuracy of lifting equipment. Sichuan Construction Machinery (Group) Co., Ltd. has a long history of tower crane production. Its product structure is mainly medium-sized and large-scale. The section of tower body is 2 meters, 2.5 meters and 4 meters. The independent height of tower crane is relatively high. At the same time, the mechanical transmission is stable, the hoisting is accurate, and it can adapt to the construction of PC project very high. Participated in the construction of many PC projects at home and abroad, SCM tower crane with its reliable quality and superior performance has won the unanimous praise of the construction side, for the PC project construction has made a great contribution, for the Chinese manufacturing set a new model.