On September 19th and 20th, 2023, a seminar titled "Brazing – Basic Knowledge of the Process and Latest Technological Innovations" took place. Participants from Bulgarian and international companies, such as AQ Group, Condex, Kozloduy NPP, ATARO Klima, and many others, took part in the theoretical and practical sessions. The special guest lecturer from the headquarters of Castolin Eutectic was Ms. Arancha Nuñez, Global Product Manager for Brazing at Castolin.