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Daxin Ec-6801 Outdoor Waterproof Conductivity Transmitter Liquisys Digital pH/TDS/ Conductivity Meter, Find Details and Price about Conductivity Meter Conductivity Transmitter from Daxin Ec-6801 Outdoor Waterproof Conductivity Transmitter Liquisys Digital pH/TDS/ Conductivity Meter - Dongguan Daxin Electronic Technology Co., Ltd.