... . We supply only top quality digital duplicator ink for use in Risograph, Ricoh,Duplo,Gestetner. ... materials and purified water to make ink.We have all series ink for riso,ricoh, Gestetener, ... benefit.Main business scope: 1. digital duplicator ink and master roll for Risogrph, Ricoh, Gestetner,Duplo ... toner cartridges for use in Hp, Samsung,Canon, Epson, Brother, Lenovo,Lexmark.3. copier toner for use ...