CITEL uses GTIN code in the label of the smallest package This means that around 1875 products will get a GTIN code. But what is a GTIN code ?? GTIN means Global Trade Item Number. GTIN are managed by one world-wide company called GS1. GS1 manages all these item numbers and gives each company a unique user ID. CITEL is going to use GTIN-13. GTIN-13 is a 13-digit code allocated for one product. EAN-13 is the barcode calculated from GTIN-13. We have decided to have GTIN-13 (and EAN-13) at unit pack level. If you want to know more, click here : GS1 standards for eCommerce