... approved by American UL 4,ISO-9001, ISO14001 5,PCB printing ink KSM-S6189 It is two-component, ... Screen printing ink for PCB, high precision, lye-development solder mask PCB ink.It’s applicable to double ... series.ItemsFeaturesNotesColorGreen,Blue,Yellow,Red,Black,WhiteAbout 50 typesFineness≤8 u m0-25 u m Fineness gaugeMix ratioBase/Hardener ... degree centigrade in dark printing ink for PCB