Product Overview Epoxy Harden er HW- 8503 is a polyamidoamine epoxy curing agent . It has low viscosity, light color, and high imidazoline, solvent-free advantages . It is widely applied in steel structures , cement, and concrete with excellent adhes ion. Performance: Good adhesion Excellent water resistance and chemical resistance High hardness Physical and Chemical Properties Appearance Yellowish transparent liquid Viscosity ( BH model CPS / 25℃ ) 200-500 Amine value (