import documents automatically within five working days ofthe presentation by the importer of the original of thecorresponding export licence . Only the original , clearly marked 'original' shall be accepted by the competent authorities in the Community as being validImport documents shall be valid for six months . for the purposes of export to the Community in accordance with the arrangements established by this Agreement .2. The competent Community authorities shall cancel thealready issued import documents if the corresponding export 2. Each export licence and certificate of Hong Konglicence has been withdrawn . origin shall bear a serial number , whether or not printed , by which it can be identified .However , if the competent Community authorities have notbeen notified about the withdrawal or cancellation of the The number for the export licence shall be standardized andexport licence until after the products have been imported composed of the following elements:into the Community , the quantities involved shall be set off — two letters identifying Hong Kong as follows: HK ,against the quantitative limit for the category and the quotayear in question and Hong Kong shall be informed as soon as — two letters identifying country of destination aspossible . follows : ---pagebreak--- N ? L 388 / 38 Jornal Oficial das Comunidades Europeias 31 . 12 . 86 BL = Benelux , licences and certificates of Hong Kong origin together with DE = Federal Republic of Germany , specimens of the stamps used by these authorities . Hong Kong shall also notify the Commission of any change in this