2015 Representing Micro Lambda Wireless, Inc. in China

           Products： Permanent Magnet Oscillators ，Electromagnetic YIG Oscillators， Bandpass Filters， Band-reject Filters， Frequency Synthesizers， Benchtop             Band-Pass Filters， Benchtop Band-Reject Filters， Benchtop Synthesizers

     2016 Representing Z~Communications, Inc. in China

         Products：VCO, PLL, small DRO module

     2016 Representing JOHANSON TECHNOLOGY in China

         Products： Baluns, Balanced Filters, Band Pass Filters, Low Pass Filters, Couplers, Diplexers and Resistors

        2017 Representing Mini System, Inc. in China

         Products： Thick and Thin Chip Resistor,  Microwave Chip Resistor, Chip Attenuator, MOS Capacitors

     2021 Representing STMicroelectronics in China

        Products： Amplifiers and Comparators,  Audio ICs, Diode, Power Transistor, MEMS and Sensor

     2021 Representing Integra RF Power Devices in China

        Products： Power Transistor, Power Module