To sell products on Amazon, if your transactions meet the corresponding regulatory thresholds, you may need to register for an EU Value Added Tax (VAT) account.

Here are the steps to register for Amazon VAT:

1. Create a VAT registration account in a European country, and you can choose to use the local language.

2. Go to the website of the European Union Fiscal Affairs Agency to apply for a VAT number, which requires providing information about your company and business.

3. Depending on your application situation and location, you may need additional application materials and pay application fees.

4. Once you have successfully registered a VAT account, you need to contact Amazon and add your VAT account to your sales account.

5. When your VAT account is added to your sales account, you need to update your tax invoice information and start collecting VAT from consumers.