When evaluating bent plywood, the most critical factor is the veneer quality and species (such as birch, beech, or maple) which dictates both strength and aesthetic finish. You must verify the bonding adhesive type, specifically ensuring the use of E0 or E1 grade formaldehyde-free glues to meet indoor air quality standards. Additionally, pay close attention to the bending radius limits and ply thickness consistency; high-quality bent plywood should maintain structural integrity without delamination or surface cracking at the curves.