The case with VDE is a good example, where the norms have law force. In contrast DIN makes a specific statement, that the norms are just recommendations (as it

The case with VDE is a good example, where the norms have law force. In contrast DIN makes a specific statement, that the norms are just recommendations (as it should!) and have no law force. Even then, often through "state-of-the-art" obligations, they end up having law force. That is BAD idea.