Must be restored to its original state. It is not only symmetrical and beautiful in appearance, but also durable. The repaired external surface should be as bright as new, and there should be no obvious defects such as wrinkles, dents, scratches and scratches visible to the naked eye or hands.

Damage and repair principle of the sheet metal parts of the load-bearing car body structure;

1, light collision damage: the parts are bent, scratched or scraped, and the damage degree (area) is less than 15%. The bending deformation degree can be repaired by hand or shaper without disassembly or disassembly.

2. Moderate collision damage: if the parts are deformed and wrinkled, the bending radius is greater than 3MM, and the damage degree (area) is less than 30%, they can be repaired by disassembly and shaping.

3. Serious collision damage: the parts are severely twisted and broken, and there are large areas of dead wrinkles that cannot be repaired. If the spare parts are damaged by moderate or severe collision, the customer requests to replace them, and the customer shall bear a certain proportion (in principle, not less than 20%).