E-mail excerpt from a client from Darmstadt

...we would like to take this opportunity to thank you once again for the excellent, solution-oriented collaboration with SONNTAG an Kessler Hirsch and would ask you to pass on our thanks to your colleagues who worked on the drinking water and service water network with us throughout the Corpus Christi holiday. 

We would also like to take this opportunity to thank Mr. Ganswindt and Mr. Sprenger for their great support with regard to all switching operations and the emergency supply for M22/M32. The preparatory work plus implementation over the Corpus Christi holiday all went smoothly.