Basic dyes for paper, wool, fabric dyeing, as well as leather and wood colors. also used as pH indicators and biological stains colors 

Acid dyes for dyeing fibers such as wool, silk, leather, also can be used for ink dyes and food colors. 

Solvent dyes (also known as Metal Complex dyes) for stationary colors such as  marking inks, inkjet inks, dyes for ball pen, and dyes for metallised polyester films etc 

Direct dyes for cotton dyeing, paper dyeing, leather dyeing, wool, silk and nylon dyeing etc.