The main products include a complete set of frequency conversion series resonance test equipment, DC high-voltage generators SF6 gas micro water meter, SF6 leak detector, SF6 comprehensive tester, test transformer, high-voltage dielectric loss tester, frequency doubling generator set, DC resistance tester, transformer ratio tester, transformer capacity characteristic tester, transformer characteristic comprehensive test bench, transformer core grounding current tester, high-voltage circuit breaker characteristic tester, circuit resistance tester, microcomputer relay protection tester, transformer volt ampere characteristic tester, high current generator, zinc oxide lightning arrester tester, capacitance inductance tester, insulation oil withstand voltage tester, insulation oil color spectrometer, grounding resistance tester, insulation resistance tester, insulation boot glove withstand voltage test device, battery constant current discharge tester, mining cable fault tester, vacuum oil filter, Oil analysis instruments, etc.