What is the normal difference between glass production date and vehicle production date?

[WalkerRose]

Assessing vehicle sales conditions: 1. For vehicles from earlier years, a difference of about half a year is normal: Sales volumes weren't as high as they are now, so a time gap of around six months is typical, but the glass production date cannot be after the vehicle production date. 2. For vehicles from recent years, the difference is typically one to two months: Sales turnover is much faster now, so inventory cycles are quicker, usually resulting in a 1-2 month difference. Methods to identify automotive glass production dates are as follows: 1. The digit after the decimal point indicates the year: Automotive glass markings usually feature a decimal point followed by a number representing the production year, e.g., "5" signifies 2015. The glass production date and vehicle production date won't differ by 10 years. 2. Small black dots indicate the production month: If dots precede the number, subtract their count from 7; if dots follow the number, subtract from 13. 3. Bold dots represent production weeks: For example, one bold dot denotes the 4th week, two bold dots the 3rd week, and so forth.