Gear Flow Meter, Electromagnetic Flow Meter, Ultrasonic Flow Meter manufacturer / supplier in China, offering 100kpa Analog 4-20mA Micro Low Air Differential Pressure Transmitter for Wind, 100kpa 4-20mA Output Air Differential Pressure Transmitter for HVAC, 6kpa Micro 4-20mA 2-Wire Air Wind Differential Low Pressure Transmitter and so on.