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Epoxy Resin is an organic compound containing two or more epoxy groups in a molecule. The cured epoxy resin has good physical and chemical properties, which has excellent bonding strength on the surface of the metal and nonmetal material. Besides, due to its good dielectric properties, good stability, high hardness, good flexibility, stable solubility in alkali, it is widely used as pouring, impregnation, laminated materials, adhesives, coatings and other purposes in national defense, national economy departments.