Electronic grade (Master >99.99): mainly used in medicine as an antidiarrheal agents, small amount, there is no domestic production, mainly concentrated in japan.

A class of grade one (the main >99.0): mainly used for dyeing, synthetic detergent, Vigny Lun etc..

Two classes of grade one (the main >98.0): mainly used for glass, dye, paper and other industries.

Three classes of grade one (the main >95.0): mainly used for inorganic salt and other industrial raw materials or other products such as filler.