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ChangSha ZhongHui Electronic Manufacturing Co. Ltd. is the national famous brand, Hunan province famous business, have international certifications such as CE, ISO etc. Sanda Electronic is a co***ny owning independent R&D, producing, sales series of electric protection products such as multifunction electron meter, intelligent digital electrical logging meter, Intelligent Microcomputer Integrated Protection Device, intelligent temperature and humidity controller, Intelligent power management terminal, CT co...
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