3D printing of components for aircraft, launchers, satellites, space stations, helicopters, military equipment; 3D printing of components; 3D printing of components of metal; customized manufacture of three-dimensional objects of metal, ceramics, plastic, silicone, wax or combinations of the aforesaid materials through treatment of materials, for others; 3D printing; electron beam melting; electron beam- powder bed melting, laser sintering, laser melting, laser-powder bed melting, in particul...