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Pen Type 5 in 1 TDS Ec Salt S. G. Temperature Meter Ppm Electric Conductivity Salinity Tester, Find Details and Price about TDS Ec Meter TDS Ec Salt Meter from Pen Type 5 in 1 TDS Ec Salt S. G. Temperature Meter Ppm Electric Conductivity Salinity Tester - Fujian Watapprove Electronic Technology Co., Ltd.