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Kingsine Electric Automation Co. Ltd. is a trusted manufacturer, exporter, and supplier of advanced electrical testing and measurement solutions based in Shenzhen, Guangdong, China. Founded in 1999, Kingsine has established itself as a trusted provider of precision instruments and test systems for power system protection, control, and measurement. With more than 26 years of industry experience and a global presence spanning over 90 countries, we deliver innovative products that enhance safety, performance, and operational efficiency in power generation, transmission, and distribution. We offer a wide range of electrical testing equipment designed for rigorous industrial and utility applications. Our core product lines include Protection Relay Test Set-Kit, CT-PT Analyzer, Power Source And Calibrator, Voltage And C