Our company mainly sells second-hand or new brands: Our company mainly sells second-hand or new brands: Agilent, Keysight, Hewlett-Packard, Keithley, Fluke, Ko Rome, Tektronix, Natioonal Instraments, Anritsu, Rohde & Schwarz, Marconi/IFR, LitePoint and other brands.The following products: oscilloscope, multimeter, network analyzer, spectrum analyzer, wireless integrated tester, Bluetooth tester, high and low frequency signal source, electronic load, digital storage oscilloscope, signal generator, function signal generator, standard signal source, frequency Meter, digital three-purpose meter, LCR digital bridge, spectrum analyzer, DC stabilized power supply, mobile phone program-controlled power supply, capacitance measuring instrument, inductance measuring instrument, swept frequency signal generator, telephone analyzer, oscilloscope calibrator, three-purpose meter Calibrator, withstand voltage tester, insulation resistance tester, ground resistance tester, leakage current tester, electrical parameter tester, digital power meter, PCI-GPIB card, ,NI PXI Chassis etc.