Kontakt

Dr. Bernd Stein

Inhaber

Telefon 0228 62 75 13

Mobil 0171 93 89 048

E-Mail stein@bonner-energie-institut.de

Dr. Michael Krumpholz

Partner

Telefon 0228 40 97 - 34 63

Mobil 0177 66 10 430

E-Mail krumpholz@bonner-energie-institut.de