Wooden packaging is the primary vector for forest pest transmission in international trade. Countries impose strict quarantine requirements on imported wooden packaging. The IPPC mark is the "passport" for wooden packaging exports.
Wooden packaging requiring quarantine treatment includes: wooden boxes, wooden pallets, wooden dunnage, wooden spools, wooden wedges, spacers, and sleepers. Artificial board products such as plywood, particleboard, and fiberboard, as well as deeply processed wood products (e.g., wooden furniture), are outside the quarantine scope. Wood thinner than 6mm is also exempt from treatment.
Wooden packaging that has passed quarantine treatment must bear the dedicated IPPC mark, including: IPPC symbol, ISO two-letter country code (CN for China), customs registration number of the wooden packaging manufacturer, and treatment method code (HT for heat treatment, MB for methyl bromide fumigation). The mark must be clear, permanent, unalterable, and applied in a conspicuous position on the wooden packaging (at least two sides).
Heat treatment (HT): wood core temperature reaches 56°C or above for at least 30 minutes. Kiln drying, chemical pressure impregnation, and other methods achieving equivalent pest control effects may also be considered heat treatment. Fumigation (MB): fumigation with methyl bromide in an enclosed space, with dosage and time determined by temperature (e.g., above 10°C, dosage 80g/m³, duration 24 hours). Some countries including the EU have banned methyl bromide fumigation; heat treatment is recommended as the priority.
Common problems include: using wooden packaging without IPPC marks, non-compliant marks (forged, blurry, incomplete information), wooden packaging with bark (live pest risk), and using used wooden packaging without re-treatment. Violations may result in cargo detention, return, destruction, or additional treatment at the port of destination, incurring high costs and delays. Enterprises are advised to purchase wooden packaging from customs-recognized qualified manufacturers.