... in small and medium cities..FeaturesUse rotor water meter as the base meter, additional with electric valve and control deviceTM card ... Units Produced(Previous Year) Digital Network Water Meter, Water Meter, TM Card Smart Water Meter 1,600,000 Sets Per Year 650, ... Report Chongqing Academy of Metrology and Quality Inspection Digital Water Meter 2010/12/31 Type Evaluation Report Chongqing Academy of ...