MHHPA is a thermo-seting epoxy resin curing agent mainly used in electric and electron field. With many advantages, e.g. Low melting point, low viscosity of the mixtures with alicyclic epoxy resins, long applicable period, high heat-resistance of the cured material and excellent electrical period, hight heat-resistance of the cured material and excellent electrical properties at hight temperature, MHHPA is widely used for impregnating electrical coils, casting electricity components and sealing semiconductors, e.g. Outdoor insulators, capacitors, light emitting diodes and digital dispalys.