[hausen]

Some higher-quality plywood does have layers whose grain is at 45 degrees to the adjacent layers: https://www.globalpp.co.uk/blog/why-do-plywood-layers-run-in...

[JoBrad]

That seems like a typo. The title says “opposite”, and just before specifying 45 degrees, the article says the layers are at a “right angle” to one another. Looking at their other products, they seem to differentiate on bonding strength and surfacing, which is pretty common.