Core Compliance Mark: CCC (3C) Certification Mark
Basic Composition:The upper section features the letters "CCC" within an oval outline, while the lower section contains a combination of letters and a 6-digit unique factory code identifying the manufacturer.
Marking Specifications: For architectural tempered glass, the mark is usually printed in a corner area that does not obstruct the view, with a minimum side length of 8mm. For furniture-grade tempered glass, the mark is typically placed on the back or side, with a minimum side length of 5mm; it is applied via methods such as screen printing or laser engraving.
Authenticity Verification:Genuine product marks are printed using high-temperature ink before the tempering process; after tempering and firing, the mark becomes embedded within the glass and will not come off when scraped with a tool. Counterfeit marks are often printed directly onto the surface after manufacturing and will fade or rub off with light scraping.
Verification Method:You can visit the official website of the China Quality Certification Center (CQC), enter the factory code found beneath the mark to look up the corresponding manufacturer's information, and confirm the product's compliance.
General Type Markings
Tempered" Marking: The internationally recognized English label for tempered glass. Some products are explicitly labeled with the Chinese characters forTempered Glassor use simplified symbols like "Ⓣ" or "△T" to indicate that the glass has undergone the heat-treatment tempering process.
Special Process Markings: Tempered glass that has undergone a homogenization heat-soak process is additionally marked with "HST" (Heat Soak Tested) or the Chinese characters for "Homogenized Tempered Glass" . This is accompanied by records of the heat-soak parameters, indicating that the product has undergone a process to screen for and eliminate the risk of spontaneous breakage.
Other Supplementary Markings:Some products may also feature the CE certification mark, manufacturer identification, production date, product specification codes, and other information to facilitate full-process product traceability.