In 2004 the ferro-concrete and prestressed concrete precast plant W + S Monnerjahn became integrated into the SONNTAG Group. In the meantime both companies have carried out projects together and shown, that noticeable synergies arise from this association to the advantage of our customers. When required, all performances come from one source.
Herbert Willecke Grad. Eng.
Bernd Sonntag Grad. Eng. Grad. Ind. Eng.