Ultrasonic Water Meter, Woltman Water Meter, Ultrasonic Heat Meter manufacturer / supplier in China, offering Factory Direct Sale Various Sizes Cast Iron Brass Multi-Flow ISO4064 Threaded Mechanical Water Meter, Environmental Friendly Various Sizes Cast Iron Brass Multi-Flow ISO4064 Threaded Mechanical Water Meter, High Quality DN15 Cast Iron Brass Multi-Flow Class-B R160 Mechanical Water Meter and so on.