We are based the United Kingdom. Our products are made in the United Kingdom. We have a Customer in Germany who is VAT registered. We have the Customer's DE VAT number. We have a GB VAT Number and a GB EORI Number for export. We send on the normal EXW / DDU service. We use DHL. Will the Customer be charged VAT? Besides changing to a DDP service, is there anything I can change above, so the business-Customer does not pay anything upon arrival? i.e does registering for an EU EORI number solve my question?