Article R713-66 of the French Commercial code
I.-At the time of each general renewal, the regional chamber of commerce and industry and the territorial chamber of commerce and industry carry out an economic weighting study, each insofar as it is concerned and in accordance with the criteria set out in articles L. 713-11, L. 713-12 and L. 713-13. This study determines, on the one hand, the economic importance of the professional categories and, where applicable, sub-categories within…