What are the markings on car glass?

[LaNorah]

There are several types of markings on car glass: National Safety Certification Mark: Automotive safety glass is a product subject to mandatory national certification in China, so every piece of glass on a car should bear the national safety certification mark, commonly known as the "Square and Circle Mark". This is the most common and important marking on car glass. Foreign Certification Marks: Such as the U.S. "DOT" mark or the European ECE "E" mark, indicating that the product has also been certified by these foreign certification bodies and can be exported abroad. Of course, some companies obtain foreign certifications merely to demonstrate that their product quality meets "national standards". Automaker Identification: Generally, glass manufacturers will print the automaker's logo, trademark, or company name on the glass as per the automaker's request. Glass Manufacturer Identification: Glass manufacturers will print their own trademarks or company abbreviations on the glass they produce, such as "FY" for Fuyao Automotive Glass.