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Concrete Admixture White Crystalline Particles or Powder Sodium Gluconate 527-07-1 for Retarder with 98% Purity, Find Details and Price about Set Retarder Water Reducer from Concrete Admixture White Crystalline Particles or Powder Sodium Gluconate 527-07-1 for Retarder with 98% Purity - Shandong Definly Chemical Co., Ltd.