Customer service

Quality classification


A	the highest quality class for hardwood species.
AB	a quality class with knots for hardwood species and Douglas fir.
EM	special-grade pine, almost knot-free.
GOST 1-4	according to the GOST 26002-83 standard
OK	knotty spruce.
OLK	knotty larch.
OM	knotty pine.
TK	sound-knotted spruce.
TM	sound-knotted pine.
VK	low-knot spruce.
VLK	low-knot larch.
VM	low-knot pine.
VM/EM	VM and EM qualities graded together; the share of EM quality is smaller.