
The repairability of a windshield crack depends on the length of the crack: minor cracks can be repaired, while longer cracks cannot. The functions of a windshield include: 1. Blocking wind and rain, and reducing noise; 2. Minimizing wind resistance and directing airflow; 3. Protecting the safety of passengers. Methods for maintaining the windshield are: 1. Use appropriate windshield washer fluid according to the season; 2. Apply heat-insulating film to the car glass. The repair process for a windshield involves: 1. Cleaning and wiping the area around the scratch; 2. Surrounding the scratch with tape to define the repair area; 3. Using a grinding pad to remove the scratch and polishing the windshield with polishing compound; 4. Applying glass scratch repair agent along the crack and allowing it to slowly penetrate; 5. Applying a small amount of toothpaste to the scratch, wiping it with a soft cloth, and rinsing it with water.


