The international export standard, ISPM-15, requires that all
wood packaging exported out of the US be heat-treated at a core
temperature of 140 degrees Fahrenheit, for a minimum of 30
minutes. This process is done to eliminate the presence of insects
sometimes found in wood.
ISPM - 15  /  Heat-Treated Pallets
Neal's Pallet Company
      Heat-treated pallets purchased from us will come with the
below stamp, clearly identifiable, on each side of our pallets.

(The xx - 000 and yy are variables depending on the country the pallets are treated in.)