Anionic poly acrylamide (APAM) series products are water-soluble linear polymers synthesized under high degree polymerization, easily soluble in water,almost insoluble in benzene, ether, aliphatics, acetone and other common organic solvents. At the meantime, APAM series products also have valuable property, like flocculation hickening, shear property, drag-reduction and dispersibility. Thus widely used in oil recovery, mineral processing coal washing.metallurgy, chemicals, paper, textile, sugar, medicine, environmental protection, building materials, agriculture and other industries.