The types and quantities of equipment needed for the post-disaster reconstruction process will be more, which will inevitably have a certain promotion effect on the sales of related companies. From the current sub-industry perspective, the main domestic excavator manufacturers include Liugong, Sany Heavy Industry, Sunward Intelligent, etc.; for bulldozers, domestic manufacturers mainly include Shantui Co., Ltd.; for loaders, domestic manufacturers mainly include Liugong and Xiagong Shares, Xugong Technology, etc.; in terms of truck cranes, the domestic heavy-duty products of Zoomlion and Xugong Technology are the main products. In addition, in view of the huge losses caused by the earthquake disaster, most of the casualties and property losses were caused by the collapse of houses. Therefore, post-disaster reconstruction may focus on the seismic performance of the building. At present, most residential buildings are brick-concrete structures, which have poor resistance to shear forces caused by horizontal swings of transverse waves and are easily collapsed, while reinforced concrete structures have strong seismic resistance. Therefore, during post-disaster reconstruction, the demand for concrete machinery will increase significantly, benefiting listed companies including Sany Heavy Industry and Zoomlion.