What Can We Do
Regarding with plywood, the density is about 0.65-0.7 grams per cubic centimetre(650-700 kilograms per liter).
Actually, compared with vertical direction, the horizontal structure of bamboo is fragile. So we developed many structures to avoid cracking, like vertical H structure, horizontal H structure, multi-layer horizontal, and so on.
Material: bamboo with phenolic resin( no other materials)