How to Check the Production Date on Glass?

[DeJeffrey]

Here are the methods to check the production date of automotive glass: 1. The production date of the glass is usually located in the code at the lower left or lower right corner of the window glass. 2. The date is represented by small dots and numbers, where the number indicates the production year, and the dots indicate the month. The specific representation methods are as follows: (1) The number is the production year of the glass, representing the last digit of the year. You can determine it based on the vehicle's manufacturing date. (2) The small black dots indicate the production month of the glass. Some glass has the dots in front of the number, while others have them behind the number. (3) 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. (4) 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.