On November 16, 2017, Mr Marian Mazurek participated in the celebrations of the 25th anniversary of REMONDIS Sanitech Poznań. The program included speech by Norbert Rethmann, Chairman of the Supervisory Board of RETHMANN AG & Co. KG, a short film about the company and the concert "Four Seasons with Tango" (Astor Piazzolla). The meeting took place at the City Hall of Poznań.