Sure is I know.
I retired from David Brown Santasalo in South Africa a couple of years ago. Part of the holding group (Clyde) also owned Moventas as they had bought the group from Metso. Moventas and Santasalo operated up until about six years ago independently. Clyde in their wisdom took all wind turbines from DB and Moventas and formed Moventas.
Seen these things up close.
Balsa is very strong compared to weight.
As for the bottle coks not sure about that In SA. Most wines have screwtop closures now. This is due a world shortage of Bark.
Lets hope we can get balsa from somewhere.