工程机械是水利、电力、石油化工、煤炭、建材、冶金矿山、城乡建设、国防工程等各部门的主要技术装备,是一个门类齐全、服务领域广阔的行业。近几年来,大型水电工程建设、公路修建、矿山开采、油田钻探、城乡建设等工程项目以前所未有的速度进行,不仅在数量上 Construction machinery is the main technical equipment of various departments such as water conservancy, electric power, petrochemical industry, coal, building materials, metallurgy and mining, urban and rural construction, and national defense engineering, and it is an industry with complete categories and a broad service area. In recent years, large-scale hydropower project construction, highway construction, mining, oilfield drilling, urban and rural construction and other engineering projects have been carried out at an unprecedented speed, not only in terms of quantity.