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          Hydroquinone Series more 
          Hydroquinone(HQ)
          Para-Benzoquinone(PBQ)
          toluhydroquinone(THQ)
          Manganese carbonate
          Fine Chemicals more 
          2-tert-butylhydroquinone(TBHQ)
          2,5-Di-tert-butylhydroquinone(DTBHQ)
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