How can I find out the tariff codes of my merchandise?

In the following link you will find the database of the General Directorate of Taxation and Customs Union of the European Commission where you can consult the TARIC code of the goods.

https://www.mapa.gob.es/fr/ministerio/planes-estrategias/lineas-estrategicas-para-la-internacionalizacion-del-sector-agroalimentario/consultaaranceles.aspx

The TARIC code is the code of the integrated tariff of the European Community assigned to the tariff classification of a good. The TARIC is integrated for the tariff nomenclature (made up of chapters, items and subheadings) and customs duties (the tax assigned to each of the items and subheadings).