What is the solution for scratched car window glass from rolling up and down?

[FinleyDella]

Window glass scratched from rolling up and down can be addressed by: 1. Applying toothpaste, which can conceal minor scratches; 2. Applying ammonia solution, by mixing 1.5 liters of water with 15 ml of ammonia, then using a clean cloth to apply the solution in a spiral motion around the scratch before wiping it clean. The functions of car glass include: 1. Shielding from wind and rain, and reducing noise; 2. Decreasing wind resistance and directing airflow; 3. Protecting the safety of passengers. Maintenance methods for car glass are: 1. Using dedicated or appropriate wiper blades and replacing them timely; 2. Keeping the windshield clean; 3. Using automotive-specific glass cleaner.