| Telefon: | +49 - 30 - 30112571 | |
| Fax: | +49 - 30 - 30112572 | |
| Mobil: | +49 - 179 - 7008063 | |
| E-mail: | zeyadeylamipour@gilan-survey.com |
| Telefon: | +49 - 3375 - 529931 | |
| Mobil: | +49 - 174 - 7827196 |
| E-mail: | andreas-tscherch@gilan-survey.com | |
| marleen-klauke@gilan-survey.com |
| Telefon: | +49 - 38758 - 26575 | |
| Fax: | +49 - 38758 - 26587 | |
| E-mail: | ronald-asche@gilan-survey.com | |
| info@gilan-survey.com |