Dalian Teren Industry Instruments Co,Ltd sell Ultrasonic Flowmeter, Portable Ultrasonic Flow Meter, Pannel-Mount Ultrasonic Flow Meter, Hand-Held Ultrasonic Flow Meter, transit-time ultrasonic flowmeter, ultrasonic water meter,  Wall-mount clamp-on Ultrasonic Flow Meter,Ultrasonic Thickness Meter, Hardness Tester, Sound level meter Vibration Meter, Lux meter, Moisture Meter, Surface Roughness Tester. we are the factory in Dalian