Shenzhen Zefengsheng Instrument Technology Co., Ltd. is a professional manufacturer of electronic instruments. The company is based on advanced production technology and perfect testing methods. R&D and production: multi-functional frequency series, low-frequency signal generator series, LCR digital bridge and DC stable power supply series. Especially the DC stabilized power supply series.We developed a D series with external circuit protection function, developed a voltage, current 4-bit LED display power supply, effectively solve the user's high and stable small current problem.Our DC stabilized power supply, with full power, high stability, high density, high precision, high reliability and high quality, has a complete and scientific quality management system. Get high marks in the industry. They are exported to North America, Europe, Japan, Korea, Southeast Asia, the Middle East and so on.