Martin Wirz

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Martin Wirz

@martin-wirz-3479

Experte für Nachhaltiges und Energieeffizientes Bauen DGNB/BiRN Auditor | Baubiologe IBN | Energieeffizienz-Experte EEE www.martinwirz.de

Active 4h ago

Joined May 8, 2024

Köln