Multi-layer composite product, featuring low emissivity in the mid-infrared band (as wavelength range 2,5 5 .mu.m) and far-infrared (as wavelength range 8.0 14.0 .mu.m) bands, as well as low reflexivity in the near-infrared (at a wavelength range of 0.7 2.5 .mu.m) and in the visible (as wavelength range 0.3 0.7 .mu.m) bands, including a base constructed with low-density and/or high thermal-resilience structural materials, covered with optionally doped coating, and where, between the base and the coating, at least one intermediate layer of metals or metal oxides is planned for insertion.