Why are the production dates of the new car's windows different?

[DelAngelina]

It is normal for the production dates of the new car's windows to be different, as long as the production date of the windows is earlier than the manufacturing date of the entire vehicle. The car's windows are purchased externally and then assembled onto the vehicle. During installation, they are randomly installed according to the production batch of the windows, so different dates are normal. Here's how to interpret the production date of car windows: 1. Currently, the most common method for indicating the production date of windows on the market is a combination of numbers and dots, where the numbers represent the year and the dots represent the month; 2. The dots can be placed either before or after the numbers. Dots before the numbers indicate the first half of the year, and the month can be calculated by subtracting the number of dots before the numbers from 7; 3. Dots after the numbers indicate the second half of the year, and the month can be calculated by subtracting the number of dots after the numbers from 13.