ISPM 15 is the international standard for
wood packaging material.

The measures of the European Community are to practically eliminate
the risk for most quarantine pests such as Asian Longhorn Beetle
and Pine Wood Nematode and significantly reduce the risk from a
number of other pests that may be associated with that material.
Wood packaging material (such as packing cases, cases, boxes,
crates, drums and similar packings, palllets, box pallets
and other load
boards, pallet collars) can only
be imported into the European Community
if
they meet the ISPM15.
All wood conforming to the ISPM15 guidelines should be stamped
with the two-letter ISO country code, a code identifying
the producer and the code identifying the approved measure applied
to the wood.
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Further Links
Wikipedia - ISPM15
Forestry
Commission website
Timcon
The Trojan Crates ISPM 15 wood stamp
