Germany Engineering System International GmbH - Sales & Technical Headquarters Siemensstr. 12 B 63263 Neu-Isenburg Germany+49 (0) 6102 2067 0+49 (0) 6102 2067 0+49 (0) 6102 2067 0+49 (0) 6102 2067 111Headquarters Engineering System International GmbH - München Einsteinring 24 85609 Aschheim-München Germany+49 (0) 89 451 0888 0+49 (0) 89 451 0888 0+49 (0) 89 451 0888 0+49 (0) 89 451 0888 18Subsidiary ESI Software Germany GmbH - Stuttgart Liebknechtstr. 33 70565 Stuttgart Germany+49 (0) 711 27 303 0+49 (0) 711 27 303 0+49 (0) 711 27 303 0+49 (0) 711 27 303 110Subsidiary ESI Software Germany GmbH - Essen Kruppstr. 90 / ETEC H4-3.OG 45145 Essen Germany+49 (0) 201 125 072 0+49 (0) 201 125 072 0+49 (0) 201 125 072 0+49 (0) 201 125 072 24Subsidiary ESI ITI GmbH Schweriner Straße 1 01067 Dresden Germany+49 351 26050-0+49 351 26050-0+49 351 26050-0+49 351 26050-155Subsidiary