Please fill out the questionnaire. If you have additional remarks, please send them electronically to lab@zgu.de or postally to:
Zentrum für Glas- und Umweltanalytik Ilmenau GmbH, Hohe Straße 45, 98693 Ilmenau-Unterpörlitz.
The executive board of ZGU GmbH thanks to your participation of our survey!