Qingdao Realltech Instruments Co.,Ltd is one of manufacturers of instruments and meters in China. Our main products include Water Activity Meter, Resisitance Thermometer, Thermocouple Thermometer, Dew Point Meter, Temperature and Humidity Meter, Temperature Calibrator, Vibration Meter, Sound Level Meter, Surface Roughness Tester, Gloss Meter, Reflectance Meter, Window Tint Meter.