Natural Fibre Board
Natural Fibre Board (NFB), or otherwise natural fibreboard or natural fiberboard, is a registered European trademark representing wood fibre boards produced without the use of binding agents – for instance, it contains no formaldehyde-based resins or other synthetic resins. It is a European wood-based panel, which belongs to the fibreboards; in the past, it was typically called hardboard, and that name is also still in use.