4412.31.52.35 - With a face ply of sen (Kalopanax spp.)

This HTS classification, 4412.31.52.35, specifically covers plywood and similar laminated wood products where the face ply is composed of Sen (Kalopanax spp.) wood. These products are characterized by their construction, consisting solely of wood sheets with each ply not exceeding 6 mm in thickness. Crucially, they feature at least one outer ply of tropical wood, and in this specific subcategory, the surface is either left untreated, or it is covered with a clear or transparent material that allows the grain, texture, and markings of the Sen face ply to remain visible.

This category is distinct from other "Other" classifications at this level by the definitive presence of Sen wood as the face ply. While other "Other" categories might encompass various tropical woods for their face ply, this node's specificity ensures that only products with Sen are classified here. The lack of obscuring surface treatments is a key differentiator from categories where decorative, opaque, or significantly altering finishes might be applied.

As this classification represents a leaf node, there are no further subcategories. This means that any product meeting all the preceding criteria – plywood construction, specific ply thickness, tropical wood outer ply, clear or transparent surface covering, and a face ply of Sen (Kalopanax spp.) – will be definitively classified under HTS 4412.31.52.35. The classification hinges on the precise identification of the face ply material and the nature of any surface treatment.