These meetings took place during the first week of February and saw a wide and interested participation. During these events, many technical questions related both to the electro-fusion process and the gas system design have arisen, and all these ones have found satisfactory answers. Particularly important was the seminar held in Krakow, during which certain sensitive aspects of polyethylene piping systems were discussed and, thanks to the analysis of European standards, even the less comprehensible aspects of the system have been clarified. Considering the active and interested participation that all the Polish technicians showed during these seminars, Plastitalia has already planned other meetings for next October.