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The intelligent and hand-held ultrasonic thickness gauge is controlled by a microprocessor, which can measure thickness and sound speed of various materials quickly, accurately and without damage by ultrasonic measurement. This instrument is capable of accurate measurement for different materials or..

Introduction:Indoor humidity should not be too high or too low: the indoor temperature is too high, the body cooling would be difficult; The indoor temperature is too low, the air is dry, human respiratory tract would dry and hard.Infant room temperature to 20 degrees Celsius, humidity should be..