Partner for clearing customs

We ship from the US to the European Union using Fedex SPOC (single point of clearance) which mean all goods are imported into France prior to shipping to the end destination country. We need a partner which indicates our Company entity in France is the importer/consignee although the actual Sold to/Bill to is the customer in Switzerland or Germany. Does anyone have a partner suggestion to handle this issue? To make things more complicated, we also need to ship to the EU using Fedex non-SPOC on hazardous items so the importer will be the end customer. I can determine the appropriate carrier/service level with route determination but I do not know how to get the appropriate importer on the proforma for SPOC shipments.