Polyacrylamide( also knows as PAM) is a water-soluble polymer formed fromacrylamide.PAM is most often used to increase the viscosity of water (creating a thicker solution) or to encourage flocculation of particles present in water. Polyacrylamide( also knows as PAM or Polyelectrolyte) is a water-soluble polymer formed fromacrylamide.PAM is most often used to increase the viscosity of water (creating a thicker solution) or to encourage flocculation of particles present in water.Anionic PAM,copolymerized by acrylamide and acrylate momomer,is a ultrahigh super high molecular weight polymer,that is 20 million minimum.It has great adsorption-bridge effect.Different model can be used according to the different application and the requirement of clients for the products performance