GDZX sales network covers the whole country. Currently, GDZX has multiple offices in Beijing, Xi'an, Guangzhou, Shanghai, Nanjing and other regions. GDZX produces series resonance series, high-voltage testing equipment, transformer testing series, secondary protection/switch testing series, standard testing power supply, cable/lightning arrester testing series, power metering equipment, grounding/insulation testing series, battery testing series, oil chemical testing equipment and other market share leading products, which are highly trusted and supported by personnel in power systems, large factories and mines, high-voltage testing and scientific research units.