How to Check the Production Date of Car Windows?

[Madeleine]

The method to check the production date of car windows: There is a code in the lower left or lower right corner of the window glass. In the last or second-to-last row, there is a number and several small black dots, which represent the production date of the glass. The number indicates the production year of the glass, representing the last digit of the year. The production date on car glass is indicated by the number and black dots: 1. The small black dots represent the production month. If the black dots are in front of the number, subtract the number of dots from 7; if the black dots are behind the number, subtract the number of dots from 13. The result is the production month of the glass. 2. Some glass may also have a few larger black dots after the production year and month, which are used to specify the week of the month.