Bildquelle

DATEI-NR.: 185355807, worker and his senior colleague working with forklift machine in storage, Von LIGHTFIELD STUDIOS;

DATEI-NR.: 28408223, happy truck driver, Von mangostock;

DATEI-NR.: 32769586, Polystyrol, Von Wolfgang Kruck;

DATEI-NR.: 567095721, yellow mineral wool with a visible texture, Von Krzysztof Bubel;