The GTIN number (barcode, EAN or UPC) is an additional information for the products which many of the suppliers add. However, it is not a must to be included among their product information, it is only an additional details.
You may check whether it is provided or not if you open a product on our Marketplace.
If it is added, it will be displayed below the price of the product along with the SKU, variant SKU or weight of the given item.
Please note, as it is not a mandatory details, in case the GTIN is not provided and you would like to add it to your products, you would need to get in touch with the suppliers directly to see if they can provide it.
If you have any questions or need any assistance, feel free to contact us via our live chat or e-mail at email@example.com