All our birch plywood is sanded on both sides and composed of 1,4 mm thick veneers by cross bonding. Face veneers can be both long grain and cross grain. Advantage of long grain, if it is laid with long age parallel to the span (perpendicular to supports), is so called “strong orientation” sheet of plywood has more plies with the grain running perpendicular to supports.
Plywood is glued with phenolic resin adhesive.
Formaldehyde emission level shall not exceed 0.2 mg HCHO/m2h, which meets the standard E1.