If the car side panel is on the car body, measure, scribe and cut the hole on the new side panel as the measurement benchmark, and then remove the required workpiece from the side panel assembly. Drill holes in the parts of the workpiece that are inconvenient for resistance welding and grind off burrs for future plug welding. Use a grinder to grind off the electrophoretic primer at the welding part of resistance welding and spray zinc powder paint. It is when the car is modified that some plastic plates need to be replaced at the bottom of the side of the car. This product does not need to change the original car, just add half a lower lip to the original bumper. The installation technology of this large enclosure is not high, and two skilled workers can install a car in half an hour. Because 3M glue and fasteners are used for installation, it is very easy to remove the shell for the second time. Car skirt composed of front and rear bars: 1. Automobile side wall is a kind of large-scale coaming, which is the external spoiler of the car body and originated from racing cars. 2. The main function is to reduce the reverse airflow generated when the car is driving, and at the same time increase the downward pressure of the car, so that the car will be more stable when driving at high speed; 3. Dawei for civil vehicles no longer pays so much attention to functionality, but emphasizes aesthetic coordination and personalization of appearance; 4. In today's pursuit of individuality, the car modification with many changes in appearance, convenient installation and the easiest to see has gradually become the first choice for car owners.