Dyes, used to color fiber or other materials, are divided into two kinds--natural dyes and synthetic dyes, including reactive dyes, vat dyes, sulfur dyes, phthalocyanine dyes, oxidation dyes, condensation dyes, disperse dyes, acid dyes etc.

Pigment is a powder materials with colorablity and covering capacity, which cannot be dissolved but suspended in water, grease, resin, organic solvent and etc mediums. Pigment is grouped in inorganic pigment and organic pigment. Inorganic pigments are divided into oxide, chromate, sulfate, silicate, borate, molybdate, phosphate, vanadate, iron cyanates, hydroxide, sulfide,metal, etc. And organic pigment are divided into azo pigments, phthalocyanine pigments, anthraquinone pigments, indigo pigments, Quinacridone pigments, Polycyclic Pigments such as oxazine-II,Fang methane pigments etc according to their chemical construction.