When you want to import or export goods, it is important to classify each product under the correct commodity code. A percentage of import duties and VAT is linked to this commodity code. Do you want to import goods? Then the amount to be paid in import duties and VAT is calculated based on this percentage.
Use the following links to check under which commodity code your product falls.
For Belgium: https://eservices.minfin.fgov.be/extTariffBrowser/Browser?date=20210412&lang=NL&page=1
For the Netherlands: https://tarief.douane.nl/arctictariff-public-web/#!/taric/nomenclature/sbn?sd=12-4-2021&d=I&cc=&l=nl&ql=nl&ea=false