For example, a coin with a damaged area of less than 1 yuan is more than 6cm away from the frame of the car, and it has not broken through the glass, but it is in a pit on the surface, which cannot be damaged in the main visual area. If the above three conditions are met, it can be repaired without replacing a new windshield. If the cracks in the smashed place form cracks, this situation can't be repaired.
If it is only a slight scratch, it needs to be repaired in time, because the cracks on the windshield will spread longer and longer, and when the damage becomes more and more serious, the windshield cannot be repaired, so a new windshield needs to be replaced.
Generally, there is almost no trace of the repaired windshield, which is no different from the new windshield. After repair, it will never crack again, but its strength can only reach about 90% of the original glass.
If the windshield is broken, you must go back to the 4s shop for repair in time, because the repair technology of the 4s shop is better, and its strength can be restored to about 90%. If you repair it in an outside repair shop, you may not see the difference, but the materials and methods used are quite different, resulting in serious damage to the windshield and the need to replace it with a new one.