PCE Polycarboxylate superplasticizer is the newest generation superplasticizer used for concrete in domestic and abroad.It is based on molecular designs and adsorption capacity of polycarboxylate,we do R&D and successfully produce water reducing and retention type polycarboxylate superplasticizer for concrete. With initiating systerm and reaction conditions,we achieve high adaptability.Comparing with PNS and other superplasticizer, PCE has many characteristic advantages in technology and performance as following: (1) low dosage, high rate of water reducing; (2) keep concrete good slumption retention; (3) good compatibility with cement; (4) small shrinkage of concrete to keep the stability of volume and durability; (5) environmental in production and usage. Base on above advantages.