Artikel III

1. The Contracting States undertake to give every possible facility to the importation of educational, scientific or cultural materials, which are imported exclusively for showing at a public exhibition approved by the competent authorities of the importing country and for subsequent re-exportation. These facilities shall include the granting of the necessary licences and exemption from customs duties and internal taxes and charges of all kinds payable on importation, other than fees and charges corresponding to the approximate cost of services rendered.
2. Nothing in this article shall prevent the authorities of an importing country from taking such steps as may be necessary to ensure that the materials in question shall be re-exported at the close of their exhibition.