On A559, take exit Köln-Porz-Gremberghoven and turn left on B8/Frankfurter Strasse, direction Gremberghoven. After some hundred meters, turn left into Neuenhofstraße, then right into Edmund-Rumpler-Straße. At the end of Edmund-Rumpler-Straße, you`ll find MikroPul on your right hand.
If you want to use train and bus: From Cologne main train station, take S13 (from Deutz train station also RB 25) until stop "Frankfurter Strasse". Change to bus 151 to Hansestr. West and then walk to Edmund-Rumpler-Strasse.