[China Glass Network] A good car glass is very important. It not only blocks heat, but also reduces the sense of speed. It is also an important part of the car safety system, which is related to the personal safety of drivers and passengers. According to statistics from relevant departments, about 10% of traffic accidents in recent years have been harmed by unqualified car glass, while some drivers who have changed their car glass have failed because of glass. Produces optical distortion, causing problems with driving sleepiness and dizziness. In order to give you a clearer understanding of the mystery on the car glass, the following small series uses practical examples to teach you the secrets of the car glass.
Generally speaking, the logos on domestic auto glass can be divided into four categories: national safety certification mark, foreign certification mark, automobile production factory mark, and glass production enterprise mark. Safety glass for automobiles is a national compulsory certification product. Therefore, every glass on a car should have a national safety certification mark, which is also known as the “square markâ€. This is a common and important symbol on automobile glass. Others include foreign certification marks, such as the US "DOT" logo, the European ECE "E" logo, etc., indicating that the product has also been certified by these foreign certification bodies and can be exported abroad.
The picture above shows a rear windshield of Changan Ford Focus. There is a set of trademark codes in the lower right corner. This is mandatory by national regulations. All car glass must be present. They are usually placed on the lower left or lower right corner of the glass.
FORD - OEM products specially produced for Ford;
(DMLQA) DOT814 - Factory code certified by the US Department of Transportation;
E000666 - European ECE (Economic Commission for Europe) certification code;
CCC - the sign of China's 3C compulsory certification;
M532AS2 - US Department of Transportation DOT certification code and glass classification code;
TEMPSAFETY GLASS - safety glass type (isothermal);
“.8â€â€”—8 indicates the year, which is 2008. The black dot is before “8â€, indicating the production in the first half of the year. The calculation formula is “7-black dotsâ€. For example, “.8†should be 7-1=6. , so this glass should be produced in June 2008; if the black point is after "8", it means production in the second half of the year, the calculation formula is "13-black points", such as "8..", indicating the car The glass is 13-2=11, which was produced in November;
â–² TINTED â–² - indicates upward installation, tinted glass.
The picture above shows the front windshield of Changan Ford Focus. The big Ford logo tells us that Fox's front windshield is from a manufacturer specializing in accessories for Ford, and the code of “E000666†not only indicates that it has obtained 3C compulsory certification, but further Explain to us that the origin of this glass is Fuyao Glass (Chongqing) Co., Ltd. Later, "LAMISAFETY GLASS", where lami is the abbreviation of lamination, means "sandwich safety glass". When the glass breaks, it will break into small pieces of honeycomb shape, the diameter will generally not exceed one centimeter, and there is a certain Adhesiveness, that is to say, it is not easy to fall off and hurt when it is broken. Now almost all of the front windshield is laminated glass.
Everyone noticed that there is an "AS1" sign on the front windshield, and the "AS2" mark on the rear windshield in the corresponding position. What does this mean? AS identifies the transmittance of the glass, the transmittance of the automotive glass should not be less than 70%, the transmittance of the front windshield is higher than the transmittance of the rear windshield, "AS1" can be used for the front windshield, "AS2" Can be used in any part other than the front windshield.
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