Mainz Main Station (Hbf) is directly connected to the ICE/IC net of the Deutsche Bahn.
Going by taxi from Mainz main station to PREMA
takes 10-15 minutes; costs about 12 EUROs
alternative: public transportation
tram 50 or 51 to Hechtsheim/Bürgerhaus
or
Bus 67 to Ebersheim/Zornheim
exit 'Mühldreieck'
pass main street
follow Robert-Bosch-Straße for 300 m
clinker building on the left side (Robert-Bosch-Straße 6)