How is birch-faced poplar plywood with an opaque phenolic resin coating classified?

What is the CLASSIFICATION of the following plywood panel? The plywood panel measures 4’ (1.22m) wide x 8’ (2.44m) long x 18mm in thickness, and has 13 wood plies (sheets of wood), each measuring approximately 1.38mm in thickness. The panel has a face ply and back ply (collectively, the “outer plies”) of birch wood (Betula spp., a non- tropical, nonconiferous wood) and the remaining plies are poplar wood (Populus spp., a non-tropical, nonconiferous wood). Both the face and back plies are surface-covered with opaque phenolic resin - a wood sealer - which fully obscures the grain of the wood it covers.