Entering an invoice with a vAT number from other country

Hey,

I made a number of purchases via Amazon.de. However, when entering the invoices for these purchases, I encounter the problem that the “Sellers” are not Amazon but a random Chinese company. These companies do have a European vAT number on the invoice, and Dexxter automatically takes this country, but the company address is somewhere in China. Even when looking up the vAT number, I cannot always find the registered address of the country of origin of the vAT number. How should I enter these suppliers? Or is it acceptable to leave it as the country of the vAT number, enter the Chinese address and add a note in the comments?