Ultrasonic Water Meter, Woltman Water Meter, Ultrasonic Heat Meter manufacturer / supplier in China, offering DN25 Brass Nylon Prepaid IC Card Water Meter Vertical Installation Class-B ISO4064, DN25 Brass Nylon Prepaid IC Card Water Meter with Free IC Card Class-B ISO4064, DN20 Various Sizes Brass Nylon Prepaid IC Card Water Meter Water Meter Free IC Card with Class-B and so on.