/?output=FEED&user_id=133670&about=1&r=4 en Gülcan Arzu Şen Sun, 08 Jan 2023 00:00:00 +0000 certification-133670-modern_energy_tapping_foundation_de https://goe.ac/courses/modern_energy_tapping_foundation_de.htm BIG +10 congratulations to Gülcan Arzu Şen for completing Modernes Energietappen Grundkurs with GoE trainer Nimet Özkan!