How to Identify the Production Date of Car Glass?

[VanAsher]

Methods to identify the production date of car glass: Look for a code in the lower left or lower right corner of the glass. In the last or second-to-last row, there is a number and several small black dots. The number of small black dots indicates the production month of the glass. If the small black dots are in front of the number, subtract the number of dots from 7; if the small black dots are behind the number, subtract the number of dots from 13. The result is the production month of the glass. There are mainly three types of automotive glass: laminated glass, tempered glass, and zone-tempered glass. Laminated glass is a glass product made by bonding two or more layers of glass with one or more layers of transparent adhesive material.