Our aims can only be achieved with the input and commitment of our members, whose technical, theoretical and practical experience are of primary importance to the association. Today we have nearly 300 members in Germany and throughout the world from a wide variety of fields ranging from constructions firms, architects and planners, building engineers and biologists to manufacturers and distributors as well as institutes, academic professionals, students and ecologically interested individuals. This broad basis represents the special strength of our association. Hand in hand we can meet the challenges of the future.