Plywood birch thickness of each veneer sheet 1mm gost 3916.1-96__1.0__ plywood exp. fc ii / iii 12mm r2 e1 - 20 n number of layers of veneer in a single sheet - 9 __1.1__ manufacturer -ooo "fsa" brand -absence -1525h1525 dimensions n = 18 m3 __ 2.0__ fa