1. Industrial production: Shanghai is one of the important industrial bases in China, and machinery and equipment play an important role in industrial production. The use of machinery and equipment can improve production efficiency, reduce production costs and improve product quality, thus promoting Shanghai's modernization process.

2. Urban construction: Shanghai's urban construction needs a lot of mechanical equipment, such as cranes, excavators and bulldozers. These mechanical equipment can accelerate the speed of urban construction, improve the quality of buildings and improve the urban environment.