As a key infrastructure of modern cities, the subway plays an important role in alleviating traffic congestion, promoting urban development, and driving economic growth. It has become an important engine for the rapid development of urban economy by optimizing the urban transportation structure with efficient and convenient transportation capacity, promoting economic exchanges and resource integration between regions.

Subway construction is a large-scale and technically complex system engineering, which has extremely high requirements for the use of lifting tools and equipment. During subway construction, due to the limitations of underground space, large mechanical equipment is often difficult to operate. For example, in narrow tunnels, conventional large lifting equipment cannot enter for operation, making light and small lifting tools such as Guanhang chain hoists and hand cranked hoists effective assistants for construction workers. These tools, with their small size, light weight, and flexible operation, have demonstrated their skills in steel lifting, mechanical installation, and other aspects, greatly improving construction efficiency, effectively reducing labor intensity, and providing strong guarantees for the smooth progress of subway construction, significantly accelerating the progress of subway construction.

With the increasing awareness of environmental protection and the pursuit of efficient transportation, more and more citizens choose to take the subway for travel. The subway not only has the characteristics of punctuality, speed, and large capacity, but also has the advantage of green environmental protection, effectively reducing the carbon emissions of urban transportation. Nowadays, the subway has become a core component of the urban public transportation system, profoundly changing people's modes of travel and pace of life, and becoming an important means of transportation in modern cities.