Vehicle body correction refers to the process of repairing the damaged or fatigued parts caused by accidents to the technical standard"state"of the vehicle at the time of leaving the factory through a certain external force.The term'state'has two meanings.'Shape'refers to a more intuitive appearance and shape,while'state'is a more abstract and deeper concept,such as whether the internal molecular structure of a metal can be rearranged according to its original position,whether the internal stress is completely released,etc.It will directly affect the functionality and lifespan of the vehicle after repair.Structural components refer to the components that play the main supporting and load-bearing role on the vehicle body,serving as the installation foundation for vehicle parts.They are commonly found in longitudinal beams,crossbeams,door posts,and lower side beams.These types of components usually have very high strength,and the structure is mostly a closed box section,so certain means and measures should be taken during repair,and reasonable processes should be used for repair.