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Cationic or Anionic Polyacrylamide Flocculant Used in Municipal and Industrial Wastewater Chemicals, Find Details and Price about Cationic Flocculant Anionic Polyacrylamide from Cationic or Anionic Polyacrylamide Flocculant Used in Municipal and Industrial Wastewater Chemicals - Henan Hangrui Environmental Protection Technology Co., Ltd.