the production date of automotive glass is the first thing many used car appraisers should look at the information, for example, the difference between the window glass and the vehicle's factory date is too much, and it is generally considered that the glass of the window has been replaced. so how does the window glass look at the date?

simply put, the number represents the tail number of the year, for example, the year number 8 of the glass should be 2008. this is based on the factory period of the vehicle to conclude, the vehicle production period is 2008, the glass production date should also be 2008. there are some small dots before or after the number, which are used to determine the month in which the glass is produced.

the dot is the first half of the year in front of the number, the number of dots in front of the number is the month of the first half of the year, the dot is the second half of the year after the number, and the number of dots behind the number is 13 minus the number of dots in the second half of the year, with a maximum of 6 points on each side. this identification method is suitable for most vehicles.