Waterproof ink --- No spread even on condensing surface.

UV visible ink --- Invisible ink which only visible under UV light.

High temp resistance ink --- For high temperature application (500-1300℃), color is changeable by different temp.

Anti-migration ink --- Good adhesion on cable (soft polyethylene) can resist migration.

Alcohol resistance ink --- Not washed off by alcohol, can dip in alcohol.

Food grade ink --- For egg shell printing application. The coding will not fade even after boiling. 

Other color: Yellow, green, blue --- brilliant color and good contrast on dark object.