Theproductionunitusinganewprocessformanufactureof1,3-phenylenediaminedevelopedindependentlybytheQingdaoScienceandTechnologyUniversity(QSTU)hasbeensuccessfullyputonstreamattheShandongEkesenChemicalCompanywithitsproductioncapacityreaching10kt/aandalltechnicalindicatorscomplyingwith