Hardwood plywood

Hardwood plywood
Plywood obłogami (outer layers) with birch veneer. The inner layers may be of veneers of hardwood or softwood. 
Plywood on the basis of phenol-formaldehyde or melamine-urea-phenol-formaldehyde resin for use in exterior conditions (according to PN-EN 636, class EN 636-3).