SUIN was founded in 1966, and has been concentrating on the development and manufacture of electronic test and measurement instruments.

In 1990, SUIN developed the first DDS Arbitrary Waveform Generator in China. In 2004, the DDS Function/Arbitrary Waveform Generator obtained the free support of " National Science and Technology Small & Medium Enterprises Technique Innovation Award Fund" from National Science and Technology Ministry.

In 2005, our DDS Function/Arbitrary Waveform Generators won National Important New Products Certificate awarded jointly by Ministry of Science and Technology, Ministry of Commerce, General Administration of Quality Supervision, Inspection and Quarantine, Ministry of Environmental Protection of P. R. China. SUIN has more than 140 employees including 40 technical experts and has sufficient equipments and devices to research, develop and produce electronic test and measurement instruments such as DDS Function/Arbitrary Generators, Pulse/Code pattern Generators, Spectrum Analyzer, time and frequency test instrument like Time Synthesizers, time difference measuring system, Frequency Standards, Digital Frequency Characteristics Analyzers, Digital AC Millivolt Meters, DC Power Supplies, Universal Intelligent Counters, Logic Analyzers, DMM and more.

We have reliable quality management system and quality guarantee system and have acquired ISO9001: 2000 International Quality Certification and most of our products have got approval CE and RoHs certification. We do our best to provide test instruments with higher performance and lower price and meet your satisfaction.