How to solve the indelible watermark on the windshield of the car

The windshield of a car needs to be kept clean at all times, otherwise it will affect the driver's vision and bring safety hazards. How to solve the indelible watermark on the windshield of the car? 1, alcohol, you can use a clean rag, dip a little alcohol, and then wipe the glass hard. 2, sludge, sludge will be very sticky, you can use sludge to wipe the watermarked place back and forth. 3, detergent, put the detergent on the towel, and then wipe the glass back and forth. 4, soda or vinegar, you can spray soda or vinegar on the glass where there is a watermark, and then wipe it with a towel. 5, professional watermark cleaner, pour the watermark cleaner on a towel or sponge, and then wipe. If there is dust on the windshield, remember not to scrape the wiper directly, but to clean it with glass water, otherwise it will cause unnecessary damage to the windshield. One of the most common is the sun pattern, which will affect the driver's line of sight under the sunlight.