... -1 Blue Dye, Black blue, dark blue ApplicationLeveling agent and brightener in acid copper bath especially in LCD, making the deposit ... bright without fume.Fast brightener PZ-2 Violet dye , amaranthine dye, ApplicationLeveling agent and ... dyePZ-3 Indigo dye, vilot blue dye ApplicationLeveling agent and brightener in acid copper bath Solube in water and well soluble ...