ISPM-15 certification is mandatory
The US, EU, Australia, and most other countries require that all wood packaging entering their borders be certified under the ISPM-15 international standard. This means heat-treated lumber stamped with the official IPPC certification mark. Standard construction lumber, even if kiln-dried, does not qualify. Every piece of wood in the shipment must be certified: the crate panels, the base skid, and any internal blocking or dunnage.