Dongguan Longwei Instrument Co., Ltd. was founded in 1996, which is a research and development, production and sales of scientific and technological enterprises. Specialising in the production of oscilloscope, DC power supply, switching power supply, variable frequency power supply, LCR digital bridge, audio frequency sweeper, signal generator, millivolt meter, wire tester, leak tester, pressure meter, etc. 120 kinds of measuring instrument and industrial equipment. In recent years, with the continuous improvement of the visibility of Longwei brand instruments and meters, Longwei’s production scale has continued to expand, Longwei brand has been more and more praised and recognised by users at home and abroad. The company has a professional technical R & D team and management personnel, with excellent product design capabilities, complete process control and testing methods, to provide users with high quality electronic measuring instruments.