GTIN (Global Trade Item Number) is a numbering system used to identify products globally. It allows products to be easily identified and tracked throughout the supply chain and between different companies and countries. GTIN is closely related to barcode technology and is often found as a barcode on product packaging.

The GTIN format can be 8, 12, 13 or 14 digits and includes the product's manufacturer information, product type and sometimes specific characteristics of the product, such as its size or color. This number helps retailers and suppliers manage inventory tracking, point-of-sale scanning, order processing and logistics operations more effectively and accurately. The GTIN is an important tool for standardizing product information and improving efficiency in global trade.