How to Check the Production Date of Car Windows?

[WalkerRose]

Method to check the production date of car windows: There is a code in the lower left or lower right corner of the window glass. The last or second last row contains a number and several small black dots, which indicate the production date of the glass. The number represents the production year of the glass, specifically the last digit of the year. The small black dots are used to determine the production month of the glass. Car window glass is manufactured by heating the glass in a furnace to near its softening temperature, then quickly transferring it to air grids with varying cooling intensities for uneven cooling. This process creates different stresses between the main viewing area and the peripheral areas of the glass. Generally, glass produced this way is zone-tempered glass.