How to Determine the Age of Car Glass?

[StJosiah]

The method to determine the age of car glass is: 1. Check the code at the lower left or lower right corner of the window glass; 2. The numbers represent the year, and the dots represent the month; 3. If the dots are in front of the numbers, it indicates the first half of the year, and the month can be calculated by subtracting the number of dots in front from 7; 4. If the dots are behind the numbers, it indicates the second half of the year, and the month can be calculated by subtracting the number of dots behind from 13. The classification and functions of car glass are: 1. Laminated glass: Transparent adhesive plastic film is applied between two or three layers of glass, enhancing the glass's resistance to breakage; 2. Tempered glass: Ordinary glass is quenched to form certain internal stress. When impacted and broken, the glass splits into small pieces with blunt edges, reducing the risk of injury to passengers.