There are several types of marks on glass: National safety certification mark: Automobile safety glass is a national compulsory certification product, so every piece of glass on the car should have a national safety certification mark, also called the "Fangyuan mark" , which is the most common and important mark on car glass. External certification marks: such as the "DOT" mark in the United States, the "E" mark of European ECE, etc. , which means that the products have also been certified by these foreign certification agencies and can be exported abroad. Of course, some companies obtain foreign certification just to prove that the quality of their products meets "national standards." Car manufacturer's logo: Generally speaking, glass manufacturers will print the car manufacturer's logo, such as trademarks, company names, etc., on the glass according to the requirements of the car manufacturer. Glassmaker's Logo: Glassmakers will print their trademarks or company initials on their glass. For example, FY is the abbreviation of Fuyao Auto Glass.

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