As a final summary, I would like to give you a few thoughts. The fact that the recent pandemic should all have become aware of how valuable our health is, I think it is currently more present than it has been in a long time.

It is all the more puzzling to me how quickly, especially in the construction industry, with regard to materials and their alternatives, pure price discussions can overturn many decisions made by you with common sense. That all healthy materials should be worth much more to us than the profane standard is a clear requirement on my part, with which I am certainly not alone.

The fact that healthy materials are valuable in many cases simply because it is inherent in them that they do more than just function well or just look good is another clear aspect of the valuable use of this group of materials. Isn't it wonderful when a material actively promotes our health, far more valuable than just not doing any harm.

Even though the definition of what constitutes a healthy material is complex, many aspects that I have mentioned today, it can be stated that in the future we will have to build much more with healthy materials and use them to maintain the health of humanity, especially when it then becomes clear to us that healthy building not only includes the health of users and residents, but also a healthy environment that can be influenced directly or indirectly in many decisions about materiality.

Accordingly, it is important to protect the environment in the long term. As a good conclusion, I can tell you that we have only seen the tip of the iceberg in the course, there are plenty of other healthy materials in the vast sea of building materials. I would be delighted if you would take inspiration from this course and say that you would like to delve deeper into this topic. Materials that healthy building materials exist can be further presented and presented. You are very, very welcome to contact us about this.

The variety is great, if not infinite. Finally, stay with you to thank you for your interest, for your attention and say, in line with the content, stay healthy. Goodbye.