It is the painting of the surface of the glass in the desired RAL colors with a silk screen mold and a roller.
It is the painting of the glass surface in the desired pattern with silk screen mold. Tempering process is mandatory for the paint to contact the glass surface after printing.
It is called the process of drilling the glass with drill bits of various diameters with and without countersink. The diameter of the holes should generally not be smaller than the thickness of the glass.
It is the opacification of the glass surface by abrading it with silica sand.