The aggregated classifications of NAF Rev. 2

France's new classification of activities, NAF Rev. 2, comprises five perfectly nested levels. However, at the international level, aggregated classifications have become necessary for preparing certain statistics and for dissemination purposes. International bodies have accordingly defined three supplementary levels: A 10, A 38, and A 64. France has added two levels of its own for national use: A 17 and A 129.