Mainly used in electroplating industry, is the main nickel salt of electroplated nickel and chemical nickel, also the source of metal nickel ions, can be in the plating process In the dissociation of nickel ions and sulfate ions. Curing oil production is the catalyst for the hydrogenation of oils and fats, the pharmaceutical industry for the production of vitamin c oxidation reaction Agent. In the inorganic industry for the production of other nickel salts such as: nickel sulfate, nickel oxide, nickel carbonate and other major raw materials. Printing and dyeing industry for the production of phthalocyanine blue blue complexing agent, used as a dyes dye agent. Also can be used to produce nickel-cadmium batteries.