A professional technical training image showing a large format porcelain tile slab being inspected in the wrong position. The slab is standing vertically and leaning against a wall, with a slight natural curvature due to its own weight and flexibility. A person is incorrectly checking the flatness while the slab is upright, creating a misleading impression of bending. Add a comparison inset showing the correct method: the same large porcelain slab laid flat on a perfectly level inspection table with a straight edge and measuring tools checking planarity. Clean factory showroom environment, realistic photography style, high resolution, suitable for a corporate sales training presentation. No text labels, no logos. Voir plus