Machinery is an important part of the equipment industry. Generally speaking, the mechanical equipment necessary for the comprehensive mechanized construction engineering required for earthwork construction engineering, pavement construction and maintenance, mobile lifting and unloading operations and various construction projects is called machinery. These 18 categories of products include excavation machinery, earthmoving machinery, construction lifting machinery, industrial vehicles, compaction machinery, piling machinery, concrete machinery, steel bars and prestressed machinery, decoration machinery, rock drilling machinery, pneumatic tools, railway route machinery, elevators and escalators, special parts for construction machinery, etc.