This MT Chair is by Spain-based industrial designers Rafa Peris and David Guilmain, collectively known as Pecadora.
It’s made from just two sheets of plywood; there is no hardware. It can support 200kg (440 lbs) in weight.
The pair don’t mention how the chair was assembled, though they do say its production involves a 5-axis CNC. I assume that’s to trim the edges of the chair into final shape after the two sheets, which surely started out a lot larger, are adhered to one another.
The MT Chair appears to be a statement piece and does not appear to be in production.