1. In Metallurgy industry: as precipitating and separating function for Rare-earth metal.?

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2. In pharmaceutical industry: used in Tetracycline, Oxytetracycline, Phenobarbital, and Borneol, etc.?

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3. In Light industry: polishing for Marble, rust-remover, bleaching, dirt-remover, leather-processing, wood, and aluminium products etc.

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4.?In Dyeing and printing industry: as reducing agent for dyeing and printing industry, as bleaching agent for textile, substitute for Acetic acid, as coloring mordant for fast pigment dyestuff.?

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5. In organic synthetic: used in 2133 resin, Urea-formaldehyde molding powder, Butadiene catalyst, etc.?

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6. In electron industry: preparation of chemicals raw material for porcelain

capacitor, preparation of electron equipment detergent.

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7. In other aspects: as analysis reagent, raw material of chemicals.