Interesting. Do you have a link? I wonder how densification works, and also if it becomes more resistant to rotting (to be more useful as long-term carbon sink).

There's also a YouTube video of someone doing it at home and testing shooting it with a gun to stop bullets.

Stronger Than Steel, Able to Stop a Speeding Bullet--It's Super Wood!

Simple processes can make wood tough, impact-resistant—or even transparent