The most popular plywood in China is 18mm in export plywood business.
Normally there are 9 plies and 11 plies veneer in 18mm ply, each veneer thickness is 0.6mm, totally the tolerance is +_ 0.5mm.
For 18mm ply film faced plywood, there are three color for choice, red, brown and black. And there are different production process from different factory, for example, there are 18mm ply with sanding, and 18mm ply without sanding and so on. But there is nothing with the 18mm ply wood quality, only with the surface smooth.