Oriented strand board (441012) is classified here because it is formed from compressed wood strands bonded with resin, not from distinct veneer plies. Plywood, which consists of glued veneer layers, falls under a separate heading. The distinction matters because the two headings can carry different duty rates and trade-remedy exposure.

Yes. The EPA's Toxic Substances Control Act (TSCA) Title VI sets formaldehyde emission standards for composite wood products sold in the US, including particle board. Importers must ensure products meet these standards and that suppliers hold third-party certification from a TSCA Title VI–recognized certifying body. Non-compliant shipments are subject to refusal of entry.