Hardboard

Acierie d'Haiti - HardboardHardboards are also called high-density fiberboard: denser and much stronger and harder  than particle board and medium-density-fiberboard (because it is made out of exploded wood fibers that have been highly compressed).

It differs from particle board in that the bonding of the wood fibers requires no additional materials, although resin is often added. It will not split or crack. It is used in construction and furniture.