KINGSINE is a specialized global provider of electric power testing and measurement solutions, recognized for its expertise in the design and manufacture of high-performance protection relay test sets and power quality analyzers. Established in 1999, the company focuses on delivering high-precision, modular, and portable testing equipment that ensures the reliability and stability of electrical grids and power systems. By combining advanced digital signal processing with user-centric software, KINGSINE supports engineers and technicians in the utility, industrial, and renewable energy sectors in performing complex secondary injection tests and maintaining critical power infrastructure worldwide.