Nari Technology Co.,Ltd. is a leading electric power technology enterprise in China. This company perform impedance measurements of cables using lock-in amplification technology. They used to buy lock-in amplifiers from a well-known international brand.

During the first half of 2016, the company utilized Sine Scientific Instruments' lock-in amplifier OE1022 for measurement purposes. The technology was compared to that of an internationally recognized brand, which was originally purchased for the comparison test. The company was pleased with the results provided by Sine Scientific Instruments. The comparison test of   Nari Technology Co.,Ltd. concludes that the instrument's performance is stable, and its convergence speed and measurement performance in small ranges are significantly better than those of a well-known international brand lock-in amplifier.