Commercial plywood is made from layers of wood veneers bonded together with adhesive. These layers, called plies or veneers, are usually arranged with their grain direction perpendicular to the adjacent layer. The strength, stability, and resistance to warping of plywood are attributed to this cross-graining process. https://www.agniply.com/unveiling-the-layers-with-the-best-plywood-suppliers-in-india.html