How to Check the Production Date of Car Window Glass?
2 Answers
The method to check the production date of car window glass is as follows: There is a string of symbols in the lower left corner of the glass, and below the symbols, there will be a number corresponding to the production year. Through this number, you can check the production date of the car window glass. The number represents the year of production, and the small black dots represent the month of production. For example: '8' indicates the year, meaning it was produced in 2008. If the black dot is before '8', it means it was produced in the first half of the year; if the black dot is after '8', it means it was produced in the second half of the year. Car glass is produced by heating the glass in a furnace to near its softening temperature, then quickly transferring it into air grids with different cooling intensities for uneven cooling, creating different stresses between the main viewing area and the peripheral area of the glass. Generally, glass produced this way is zone-tempered glass.
As a car enthusiast, I enjoy studying the little details of vehicles, and checking the production date of window glass is quite interesting. Usually, there is a small dot or a combination of numbers in the corner of the glass. For example, if you see a number before the dot and another after it, like dot dot 19, it might indicate production in 2019. If the dot is before the number, it represents the month, and the number after is the year, such as 10 dot dot 19, meaning October 2019. To find it, choose a well-lit time, squat down, and carefully examine the corner of the window. Don’t rush—some car glass markings are easier to spot on the passenger side. Knowing the production date is very helpful for maintenance and buying used cars. For instance, you can determine whether the glass is original or replaced, helping you avoid purchasing a car that’s been in an accident. I’ve found that when the glass date matches the manufacturer’s label on my own car, it gives me much more peace of mind. I recommend checking this small detail regularly.
