8. Importers shall, upon a reasoned request from a national authority, provide that authority with all the information and documentation necessary to demonstrate the conformity of packaging, including technical documentation, with the applicable requirements laid down in or pursuant to Articles 5 to 12, in one or more languages which can be easily understood by that authority. That information and documentation shall be provided in electronic form and, on request, in paper form. The relevant documents shall be made available within 10 days of receipt of the request from the national authority.