CYG provides a comprehensive online monitoring solution covering critical power equipment from transmission lines, cables to transformers. Its core products include: the SE3000 series dissolved gas analysis online monitoring device, suitable for oil-immersed transformers/reactors of 35kV and above, featuring high precision and reliability; the PRS-7165-C cable distributed fault diagnosis system, applicable to 35kV-500kV cable lines, enabling rapid and precise fault location; the PCM series for cable partial discharge, grounding current, and channel environment integrated monitoring, comprehensively covering cable insulation, grounding status, and operating environment monitoring; as well as the PCM-3231 micro-meteorology and PCM-3224 galloping monitoring devices, specifically designed for meteorological disaster early warning on transmission lines. Based on advanced technologies such as constant-temperature vacuum degassing, next-generation chromatogram recognition, and traveling wave analysis, these products feature high accuracy, high reliability, strong environmental adaptability, and modular expandability, meeting the demands of digital substations and intelligent maintenance.