Hello: I am a car maintenance sheet metal worker. According to your description, the mechanical cover needs partial painting. The repair procedures are as follows: sheet metal shaping and leveling-three times putty-two times primer-three times topcoat-two times bright oil spraying-delivery after completion. Just go to the repair shop with an oven outside. 4s is too expensive. The price is 200-500 yuan and 500 yuan won't cut corners, and those lower than 500 yuan will cut corners, just a few.