A container of packaging can be perfectly made, finished on time and loaded early, then sit at a destination port costing money every day because of a stamp missing from the side of a wooden pallet. Wood packaging rules are unglamorous, unforgiving, and cheapest to deal with before anything ships.
What is ISPM 15? ISPM 15 is the international standard covering wood packaging material moving between countries – pallets, crates, dunnage, wooden spacers and blocks. Raw wood can carry insects and larvae across borders, so participating countries require it to be heat-treated or fumigated and then stamped with a visible mark. The rule applies to the pallet rather than to your cartons.
What does the stamp look like? A rectangular mark containing the IPPC wheat symbol, a two-letter country code, a unique number identifying the treatment provider, and letters indicating the method – HT for heat treatment, MB for methyl bromide fumigation. Inspectors look for it on the side of each pallet, legible and original. An unmarked pallet risks rejection or re-treatment at the importer’s expense.
Do all pallets need treatment? Solid wood ones do. Plywood, OSB and other engineered boards made with heat-cured adhesive are generally exempt because the manufacturing process already deals with pests, and plastic, metal and presswood pallets fall outside the standard altogether. Where there is any doubt, treated and stamped is always the safe route – arguing exempt status at a border is slow and usually unsuccessful.
Can I avoid the problem with plastic pallets? Yes, and it removes ISPM 15 from the conversation completely. The trade-offs are cost, load behaviour with heavy glass or liquid shipments, and local expectations: many distribution centres prefer standard wood because it is repairable and recyclable nearby. For light packaging sent by air, plastic or presswood is frequently the simpler and cheaper answer.
Is a fumigation certificate different from the stamp? Yes. The stamp is evidence physically applied to the wood; the certificate is paperwork issued by the treatment provider, and some importing countries require it in addition. Requirements vary by destination and change from time to time, so give the destination port early enough for current rules to be checked rather than settled at clearance.
Who arranges it, me or the factory? Normally whoever is shipping, since they build or buy the pallets. The point worth confirming is whether the cost is inside your quotation – fumigation is a real charge and it occasionally surfaces later as an unquoted line. Ask directly whether pallets will be heat-treated and stamped.
Can pallets be reused from an earlier shipment? Only while the mark remains intact and legible on two opposite faces and the wood is sound. A repaired pallet with a missing, painted-over or sanded-off stamp counts as unmarked. Saving the cost of one pallet is not worth the risk of a container being held.
Does this affect air freight? The standard still applies, though air shipments more often use lightweight pallets or slip-sheets because volumetric charging makes heavy wood expensive to fly for no benefit. This is also why sea and air consignments are often packed differently – our comparison of courier and sea freight covers when each makes financial sense.
How many pallets will my order need? Depends on carton count, carton size and whether cartons travel loose or bundled. A supplier should quote volume in cubic metres and pallet count at the time of quotation, because both drive freight cost and how much of a container you are paying to leave empty. Stacking patterns and container loading are set out in our FAQ on pallets, FCL, LCL and loading.
Do the cartons themselves need marking? The outer carton usually carries shipping marks: destination, carton number, quantity, sometimes a purchase order reference, printed or labelled. Printed marks look presentable but require the information to be finalised before printing; labels or stencils can be added later. Sequential numbering – carton 1 of 120, 2 of 120 and so on – genuinely helps whoever receives the shipment.
What if my shipment is held for inspection? Wood packaging issues are among the more avoidable causes. When it happens, the options are usually re-treatment, repacking onto compliant pallets, or in the worst case return, and all of them are paid for by whoever owns the goods at that point. If your paperwork is in order at the outset, inspection delays are usually short – the documentation side is covered in our FAQ on export documents and certificates.
Should the factory send loading photographs? Ask for them. Photographs of palletised cartons, wrapping and container loading cost nothing and are the reference you need if damage occurs in transit. Most factories take them routinely; the ones that cannot produce them are worth asking a follow-up question about.
Tell us the destination port when you enquire, not after production. It affects pallet choice, documentation requirements and how the load is planned. Send your product details through the quote request page with the delivery address, and we will confirm what that destination currently requires.
Chengtop ships folding cartons, rigid gift boxes, corrugated shipping boxes and custom inserts from Wuhan to Europe, North America, the Middle East and Southeast Asia. Pallets are heat-treated and stamped as standard, each shipment is photographed before loading, and packing lists match what is actually counted onto the container.


