In Belgrade, Serbia, the Technical Fair took place from May 11 to 15, 2015. A major partner of the fair was the Czech Republic. The Czech joint booth, which was organised by the Czech Ministry of industry and trade, also hosted Domat Control System. In the Domat exposition visitors saw both the core of the Domat product range, and hot 2015 news. Lively talks with the visitors showed that the Serbian customer is well oriented, although experienced in industry controls rather than in the building control system area. Especially student visitors were surprisingly open and interested in the free-programmable PLCs. The construction market has a big potential in Serbia, although projects tend to be delayed, and often not finished at all. The Belgrade Technical Fair proved itself to be an interesting platform for new business contacts not only for Serbia, but also Macedonia, Montenegro, and other countries in the region.