Using the three main categories of imported materials (italic amphorae, black glaze ware ceramics and metallic vessels), based on an inventory of 1.660 sites, we propose a first assessment about the characteristics of their broadcasts in Western Europe. GIS help us to establish in a first step, som diffusion maps of furniture across western North Alpine Europe. Some examples show that the workings of the broadcasts of these products, far from being reduced to only “Romanization” are complex and we pledge to continue this research in the future.