Vertaling van "union and you can ask them to issue you an e106 " (Nederlands → Frans) :

In this case, you are always covered by the social security of your country of origin (if it is part of the European Union) and you can ask them to issue you an E106/S1 document of international agreement, provided your legal address is in Belgium.
à cette dernière de vous délivrer un document de conventions internationales E106/S1, à condition que votre adresse légale soit en Belgique.

You can ask the social security of your country of origin (if it is part of the European Union) to issue a European Medical Insurance Card which will allow you to enrol free of charge in a mutual insurance company in Belgium.
délivrer une Carte Européenne d’Assurance Maladie qui vous permettra de vous inscrire gratuitement à une mutualité en Belgique.