Ultrasonic Water Meter, Woltman Water Meter, Ultrasonic Heat Meter manufacturer / supplier in China, offering DN15-32mm Stainless Steel IC Card IP68 Solar Powered OEM Water Meter, DN15-32mm Brass IC Card Dual Protocol M-Bus/RS485 OEM Water Meter, DN15-32mm Nylon IC Card Prepaid Anti-Freeze GB/T778 OEM Water Meter and so on.