The goal of improving the performance level and quality combinations of windows and curtain walls is mandatory for the evolution of the industry and constitute a prerequisite for the current sustainability targets. In the new economic conditions which have been installed with the imbalances generated by the latest recession, the manufacturers in the field have begun to realize increasingly the necessity to apply corrections that guarantee an increased performance for the finished products, including changes in component systems which are both endowment frames and insulating glass units. To achieve this objective, ...