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Power analyzer, power meter, power inverter, power meter, specialized in research of measurement technology of variable frequency power, it is the development of national power frequency measurement instrument metering station to create units and national measurement standards is the main variety of power meter, power analyzer, frequency conversion power measurement instruments and industrial control products... Hunan Yinhe Electric Co., Ltd. (hereinafter referred to as Yinhe electric) is the drafting unit of the national standard for variable frequency electric quantity measuring instruments and the initiator, builder and maintainer of the construction of the national variable frequency electric quantity traceability system... 　　YINHE ELECTRIC focus the best technical staffs, established the innovation centers, more than 60% of R & D costs for the industry to provide customers with professional measurement and control of the overall solution. Modular architecture and virtual..