HG series multi-function standard source and calibrator
MGY/DO30 Series Calibrator/Trimeter Calibrator
Three-phase/single-phase electric energy meter calibration device
Insulation resistance meter (megger) calibration device
High voltage/ground resistor (device/box)
AC and DC high current standard source/welding machine calibrator
Clamp ammeter calibration device
GZC series petrochemical measurement and control instruments
HGZW series dyeing, weaving and weft trimming machine
other products
DO30 series three-meter/multimeter calibrator
HG2000 AC and DC clamp ammeter calibration device
HG1000A type current source
DO30-Q type clamp meter calibrator
CY-3A Intelligent Electric Energy Meter Field Calibrator
DO30-Q+ multifunctional clamp meter calibrator
DO30-III multifunctional calibrator
HG5550 multifunctional standard source
JD-1B type ground resistance meter calibration device
HG-3C single-phase electric energy meter field verification device
MGY6508 three-phase multi-function calibrator
MGY1000A AC high current standard source
HG-5000 precision power supply
