| The Blauer Engel (Blue Angel) is the first environment-related label for products and services in the world. It was created in 1977, and the first awards made in 1978. |  |
The dark art of knowing clearly
| The Blauer Engel (Blue Angel) is the first environment-related label for products and services in the world. It was created in 1977, and the first awards made in 1978. | |
