F21 Anti-fire bom is based on revolutionary technology that provides far more advanced solutions than portable fire extinguishers. The limitations and problems associated with conventional methods of extinction (maintenance, training, etc.) are at the origin of its development. It is easy to use and provides permanent protection as it self-activates in the presence of a flame without human intervention. This anti-fire bom are use in our drone model X4450 VTOL anti-fire with dropping system.