Please introduce vertebral wood, thank you!

Vertebrate wood, also known as "African teak", is a porous wood of FAGACEAE. It has fine structure, hard and heavy texture, difficult deformation, pleasing color, smooth section, slight fragrance, few knots, moisture resistance, strong corrosion resistance and durability. Most of the outstanding ancient buildings in southern provinces are made of vertebral wood. After testing, it will not crack and deform in the environment of -40 degrees to +60 degrees. Spine wood is called "Hainan rosewood, Meizhou stone spine wood".