/All Commercial Videos Petrogonia. Roof slate 663 Views Petrogonia. Roof slate Commercial Video Client Petrogonia Date September, 2012 Date 1 September 2012 Director Apostolos Chouliaras Share: You may also like this George Kourkouvelos – “REQUIEM” Painting / All Commercial Videos, Commercial Videos Ouzo 12 – Volos factory / All Commercial Videos, Commercial Videos House with Bioclimatic Design Elements – Volos / All Commercial Videos, Commercial Videos