Recently, in the 2023 "National Key R&D Program Project" progress exchange meeting, Sine Scientific Instrument team's chief technical advisor, Associate Professor Wang Zixin of Sun Yat-sen University, as the project leader reported the progress of the "National Key R&D Program" project, "Research and Development of Precision and Large-Bandwidth Lock-in Amplifier and Application". "The project has realized the high precision phase-locked amplification technology with more than 100M bandwidth. The industry experts attending the meeting highly praised the current team's achievements in phase-locked amplifiers.