What is the normal difference in production dates for new car windows?

[VonAmelia]

A difference of 2-3 months in the production dates of new car windows is considered normal. Below are specific methods to check whether the windows have been replaced: 1. Check the manufacturer: Look at the manufacturer's code on the window to identify which company produced it. Car manufacturers typically purchase windows in bulk and do not use too many brands or the same brand from different production locations. 2. Check the production date of the window: If there is a significant difference in the production dates of the windows on the same car, it may indicate that the car has been refurbished or the windows have been replaced later. 3. Check the window label: If the windows have been replaced, the new window label will be noticeably different from the original factory label.