Products include sodium metabisulfite, sodium thiosulfate, anhydrous sodium sulfite, ferrous sulfate, and ferrous carbonate. The annual production capacity reaches 8,000 tons of sodium metabisulfite, 6,000 tons of sodium thiosulfate, 5,000 tons of anhydrous sodium sulfite, 10,000 tons of ferrous sulfate, and 10,000 tons of ferrous carbonate. At the same time, it also operates the reference chemical products (soda ash, ammonium chloride, baking soda, etc.) in Hunan.