German Glass Technology Society (DDG) is the promotes the knowledge of its members in the field of glass and their personal contacts with each other.
According to PR-model, hvg-dgg.de is ranked 446,241st in multilingual Wikipedia, in particular this website is ranked 47,054th in German Wikipedia.
The website is placed before mactheatre.edu.mk and after behgopa.com in the BestRef global ranking of the most important sources of Wikipedia.