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nature : sodium hydroxide (caustic soda) and Anthraquinone as a cooking agent to improve the alkaline pulping. Due to the anthraquinone instead of sodium sulfide, it eliminates the stench of atmospheric pollution. Using this method the pulp production capacity of its water treatment, papermaking machine at the treatment fast, dry well. Only slightly more bubble, pulp dark color, bleach, can be used in the production of general culture, such as paper and packaging.
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