Level of quality once again confirmed in 2019: Spiegel Institut has been certified by TÜV for the 11th time
The result of this year’s successful audit confirms the level of quality at all Spiegel Institut sites for the 11th time in a row. The TÜV audit according to the ISO 9001:2015 standard has been carried out annually since 2009. With this certification, Spiegel Institut is able to offer its customers the peace of mind that it continuously upholds proven quality standards.