Our Nano Protective Glass Shield Fortifying Coating contains a surface activator, deionized water, and nano silicon. It can prevent rain and dust and strengthen glass. Its use method is very simple: clean the glass surface before use, turn to the left several times to open the top cover of the product, take an appropriate amount of the product evenly apply to the glass surface, leave it for 5-10 minutes, and then clean the glass surface with water. Can strongly strengthen the glass.