The quality of a product reflects the quality of an entire company. Quality assurance according to DIN ISO 9001 therefore covers all company activities, from development and manufacturing to administration and logistics. A whole set of quality guidelines, providing quality controls at the individual stages of production and attaching special importance to the protection of the environment, apply to all these operations. It is on that basis that we are still today continuously improving the entire workflow and the organisation of all production sectors. The seal of quality is enhanced by additional test certificates of independent, leading international inspection bodies such as the Gütegemeinschaft Kunststoff-Fensterprofile im Qualitätsverband Kunststofferzeugnisse e. V.