The principal printing process is known as intaglio printing. This process is used because of its ability to produce extremely fine notes that remains legible under repeated handling. Our banknotes are made using ingredients such as cotton fiber (80-99%) originally sourced from common white linen rag, wood fiber (1-3%), titanium white( 2-3.5% by weight of the total wood fiber), polyamide epichlorohydrin ( 0.5-2% by weight of the total cotton fiber), aluminum chloride, polyamide epichlorohydrin, melamine formaldehyde resin, animal glue. Generally, the paper used is different from ordinary paper:it is much more resilient, resists wear and tear which can last longer. And also does not contain the usual agents that make ordinary paper glow slightly under ultraviolet light.