In the region of Vale dos Vinhedos, RS it is inserted a network formed by wineries, grape growers, hotels and restaurants. Collective actions occur in the network, standing out the Indication of Origin Label of fine wines. This certification of quality affected several actors, since the consequences of the label for the different actors involved are unknown. Thus, in this study, the implications of the certification for the grape growers and wineries were identified, through interviews and questionnaires. The main results point to a scenario of value creation in the viticulture network. The label has a positive impact on the sales of fine and common wines of the wineries. It was also identified that the certification shows a positive influence on the income of the region's producers. The research demonstrates that the profits existent in networks overcome the risks and costs of such collective systems.