Officials of the administrations of the other Member States of the European Union, duly authorised by the requesting authority by means of a written mandate and authorised by the French administration, may, in accordance with the procedures laid down by decree in the Conseil d’Etat:
1° Be present in the offices where the officials carry out their duties;
2° Attend administrative proceedings conducted on French territory;
3° Question taxpayers and request information from them;
4° Examine files and receive copies of the information sought.