there will be a trademark in the corner of the automobile glass, which consists of several dots and a number. The number represents the year of production of the automobile glass. If the dot on the left represents the first half of the year, the one on the right represents the second half.

By analyzing the numbers and black spots on the trademark, the date of production of automobile glass can be distinguished.

the date code of the glass has only one digit, which represents the last digit of the year.

For example, the number 8 represents 28.

as for why it is not 1998, we can judge from the factory date of the vehicle that the difference between the factory date of the glass and the vehicle will not exceed ten years.

the month can be analyzed by the black dots before and after the number, so as to judge the factory month of the glass.

The black dot in front of the number indicates the first half of the year, and you can use 7- points to get the specific month.

if the second half of the year is indicated after the number, you can use 13- points to get the specific month.

We can analyze which week of the month the glass was produced.

for example, 5 dots represent 1 to 7, 4 dots represent 8 to 14, and 3 dots represent 15 to 21.

Learning how to check the date of the glass can distinguish whether the car has had an accident or whether the window glass has been replaced.

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