In this issue, *Mundo do Ar e da Refrigeração* Magazine presents an important overview of the air conditioning installation sector—with a focus on direct expansion equipment. To what extent is technical training important? And does content on social media replace courses offered by schools and institutions? You’ll find answers to these and other questions in this article. Also featured are the 60th anniversary of the Copan Building, an architectural icon of the city of São Paulo, and the restoration of the century-old refrigerated cargo ship Pallas. Enjoy the read!
