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The universal method for the preparation of products to be printed, the printing takes place in a number of colors ranging from three to six by a process photomechanical any of the photographic plates of all kinds, by means of a combination of a photolithographic sheets are selected according to the colors and of a neutral tone, or coloured
The universal method for the preparation of products to be printed, the printing takes place in a number of colors ranging from three to six by a process photomechanical any of the photographic plates of all kinds, by means of a combination of a photolithographic sheets are selected according to the colors and of a neutral tone, or coloured