Barcodes have been around for over 50 years and are essential for data storage. 1D barcodes consist of lines and are scanned horizontally with laser scanners. Code 39 and Code 128 are early examples of linear barcodes. EAN and UPC are common 1D barcodes used in retail and logistics. VIN barcodes are used for automotive identification with 17 characters
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Barcodes contain business prefix and product serial numbers. GS1 maintains global barcode standards. Barcodes available in denominations from one to thousands. Most businesses use UPC (North America) or EAN (Europe)
GLN is a 13-digit number identifying parties and locations in supply chain. GLNs are globally unique and interoperable across trading partners. GLNs serve same purpose as UPCs/GTINs for products
GS1-128 is a subset of Code 128 barcode symbology. Uses GS1 Application Identifiers for element strings. Maximum length is 165.10mm including Quiet Zones
Shein is a Chinese-owned e-commerce platform founded in 2008. Company is based in Shenzhen, China. Operates under multiple brand names including ShenZhen Global Egrow E-Commerce Co. Serves over 220 countries worldwide