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Polymeric Ferric Sulfate Pfs 21% Fe Phosphorus Removal Coagulant 2mt MOQ, Find Details and Price about Pfs Wastewater Treatment Coagulant 21% Fe Sulfate from Polymeric Ferric Sulfate Pfs 21% Fe Phosphorus Removal Coagulant 2mt MOQ - Shenzhen Hengjiesheng Environmental Protection Technology Co., Ltd.