(1) food grade: bleach agent (e.g. candies, cake, bamboo shoots, etc); loose agent (e.g. bread, cracker etc); antiseptic and germicide (e.g. fruit juice, tinned food, brews, the cereals food is defended storage etc); inhibitor and freshen agent (e.g. day lily, seafood, fruit and vegetable etc).
(2) industry grade: mordant of printing and dyeing; dechlorinate of textile after bleaching; sulphonated agent and reducer of chemical industry and pharmacy; bleach of paper pulp, bamboo and timber bleach of stap; treatment agent of waste water; rubber solidifying agent perfume industry is served as hydro carbon perfume aldehyde the hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .
(3) pharmaceutical grade: in chemical synthesis in the production of acrylic fibre, vitamin k, vitamin a, pharmaceutical intermediates, etc.
(4) photo grade: the sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.
