/All Commercial Videos Petrogonia. Roof slate 787 Views Petrogonia. Roof slate Commercial Video Client Petrogonia Date September, 2012 Date 1 September 2012 Director Apostolos Chouliaras Share: You may also like this House with Bioclimatic Design Elements – Volos / All Commercial Videos, Commercial Videos Old Town in Volos (Spot) / All Commercial Videos Thea Apartments Santorini / All Commercial Videos, Commercial Videos