What wood is called square material
Fiberboard is divided into hard, semi-rigid, soft three, with a uniform structure, texture, hard, large format and so on.
Hollow board types are more, such as box empty core board, wood hollow board, paper honeycomb board, foam plastic hollow board and so on.
hollow board. Air core plate refers to the use of plywood, flat panel to do the panel, the middle filled with some lightweight materials, made by a rubber-made panel.
Blockboard. Blockboard refers to the use of plywood to make the panel, the middle close to fill the fine wood-based panel.