Research focus. The principal objectives of our study are: -To detect and characterize innovations produced in the Castellon Ceramic district from a historical perspective and as a learning region; -To study the specific case of a recent innovation, analyzing the knowledge flows throughout both the core networks (links with the local environment) and the periphery networks. In this study-case we try to identify, according the evolutionary theories of technological change, three main functional dimensions: 1.Absorption of new knowledge for adaptation to local needs, 2. Generation of new knowledge, technology and innovation, and 3.Difussion of innovation throughout all the ¡'learning system¡¨ (Iammarino, 2004).