Flowmeter manufacturer / supplier in China, offering DN50-350 R250 T30 Ductile Iron Modbus/ RS485/ Lorawan/ Nb-IoT Ultrasonic Water Meter, Cold/Hot, DN15/DN20/DN25 Smart Ultrasonic with Prepaid Remote Control and Lora/Lorawan/4G Water Meter, Reliable DN150 Smart Flow Meter with RS400 Accuracy and Modbus Protocol Integration Ultrasonic Watermeter and so on.