Wooden work material for europallets

Wooden work material could be made from saw timber of softwood (fir, white spruce, pine, larch) or of hardwood (alder, birch, poplar, acacia, maple, plane tree, chestnut).
Wooden work material without rough edge, rot, mechanical damage and foreign impurity.

Bluing is not higher than 25%.
Knot diameter of 10mm is not taken into account. Accrete knots are acceptable.