The technical level of Bicai Eng.'s are in condition to participate in technical discussion with customer and power grid Eng.'s. as well as, has the technical acknowledge to participate in preparation and revision of national and international standards. We have member our staff that has already participated together other Eng.'s on National and International Committee during the revision of GB Standard, IEC standards: IEC 60335-1, IEC 60358-1, IEC 60831/1-2 and IEC 60252-1 (TC33).