The digital printing on glass phase with ceramic paints is followed by the Glaston FC500 furnace quenching process. Tempering allows ceramic paints to vitrify at high temperatures, preserving their quality over time at any exposure. The vivid colors and the perfection of the details will resist exposure to atmospheric phenomena, UV rays and wear over time, remaining virtually unchanged. The hardening can be associated with H.S.T. test , to have total guarantees on the resistance of the glass.