We aim to study the impact of international trade on individual export dynamics. Empirical studies on company data show a gradual increase in volumes and in the number of destinations. We will test the theoretical predictions of a previous paper (« Sequential Exporting », Journal of International Economics, 88-1, 2012, 17-31, co-written with. Albornoz, H. Calvo and E. Ornelas) on the impact of the variations of the cost for bilateral trade on a countries’ export figures. We will thus require disaggregated trade data at product/firm/country level. This data will be matched by product and customs’ data (TRAINS database). The BRN database will be used to calculate corporate productivity (inferred from the added value and secondary product consumption) to outline several theoretical mechanisms affecting individual exports. Lastly, the Financial Links database (LIFI) will enable to identify multinationals for which theoretical mechanisms should be different.