Steel Wood Density Board (SDB) by definition is an environmental-friendly composite-wood material, that is made up of 100% post-consumer recycled random mix wood species (including SDB waste panels (excluding for MDF). Trees are not to be cut to manufacture SDB as the “raw material” need 100% unusable wood residues and waste wood. Should there be a “non-environmental tree” proven and justified by international norms, the manufacturer should not engage in trimming and cutting of the tree and a third party needs to be engaged in such an operation to maintain the chain of custody requirements enforced by the FSC certification body or similar. SDB is a recycled material manufactured in an SDB dedicated intelligent line, that produces high mechanical properties when compared to the mother-wood specie.