Lignocellulosic filler reinforced polymer
A lignocellulosic filler reinforced polymer is a composite material made through the combination of vegetal fibres or particles (also called "fillers") and a matrix of organic polymers. Composites are designed to improve the mechanical properties and lower the impact on the environment.
Source: Wikipedia — Lignocellulosic filler reinforced polymer (CC BY-SA 4.0)