How to Identify the Production Date of Imported Glass?

[MacAlana]

Car glass production date should precede the vehicle's manufacturing date Currently, there are three main methods to indicate the production date of car glass. The most common method, accounting for over 80% of the market share, consists of small dots and numbers. The numbers represent the year, with two rows of dots to the right of the number. The first row of dots indicates the month, and the second row consists of dots of two different shapes. The first type of dot: 1 dot represents N days, 2 dots represent N+10 days, and 3 dots represent N+20 days.

[StIan]

When I was buying a car, I was curious about how to check the production date of imported glass, and later learned a little trick. Usually, there is a small dot matrix code in the corner of the glass. The number represents the last two digits of the year, and the dots indicate the position of the week. Dots in front represent weeks 1 to 26 (first half of the year), while dots at the back represent weeks 27 to 52 (second half of the year). For example, the number '20' with 5 dots in front means it was produced in the 5th week of 2020. Imported glass markings follow international standards, similar to domestic cars, making them easy to understand. Knowing this is important, especially when buying a used car to determine if it's an original part or was replaced due to an accident. Glass strength decreases with age, and after ten years, it may become brittle, affecting safety. It's recommended to clean the glass carefully and check the corner position to avoid misreading the number of dots. Different brands like BMW or Toyota use the same coding system, so you can use this method confidently. Regular checks can prevent issues, and the date can be referenced during maintenance.

[OFernando]

With years of experience in auto repair, I'm quite familiar with reading the production dates on imported car glass. The glass corners have numbers and dots—the numbers represent the year, like '21' for 2021. Dots before the number indicate weeks 1-26, while dots after denote weeks 27-52. For example, '19' with 3 dots after means the 31st week of 2019. This labeling system is globally standardized for imported glass, though some brands may have minor variations. The production date is crucial because glass has a limited lifespan—UV degradation reduces light transmission, increasing risks at high speeds. Cars over five years old should prioritize glass inspections. The markings are usually found in the lower left corner; clean gently with a soft cloth for clarity. Imported brands like Mercedes-Benz use similar systems, making them easy to interpret. These dates help assess warranty status or identify stockpiled parts to avoid safety hazards. Cross-referencing with vehicle records during maintenance ensures greater accuracy.

[MadelynLynn]

When I first started driving, I didn't know how to read the glass date. A friend taught me. Imported glass has small numbers and dots in the corner. If the dots are in front, it means production in the first half of the year; if the dots are behind, it's the second half. Numbers like '22' indicate the year 2022. Simple, right? But beginners often confuse the number of dots representing weeks. The production date is important because older glass is more prone to cracking, especially with significant temperature changes. The markings on imported glass are standardized, similar to domestic cars. It's recommended to look up example images online to learn and avoid misreading. The markings are usually located on the edges and can be seen clearly after cleaning. Be cautious about glass aging after ten years for safety reasons, and regular checks can help detect issues early. If unsure, ask a professional.