Softwood plywood - Is usually made either of cedar, Douglas fir or spruce, pine, fir or redwood and is typically used for construction and industrial purposes. Hardwood plywood Made from hardwood, often from birch and used for demanding end uses. Birch plywood has excellent strength, stiffness and resistance. Tropical plywood - Made from mixed species of tropical wood. Special-purpose plywood Aircraft plywood Decorative plywood (overlaid plywood) Flexible plywood Marine plywood fire-retardant plywood moisture-resistant plywood sign-grade plywood
