Chinese construction industry has been in fierce competition all the time. Some of them are famous for their quality, and gradually become the industry benchmark of excellent enterprises. The quality of the building materials can be tested by thickness gauge, ferrite detector, crack detector, radon detector and so on. The stress detection, stress detection and horizontal alignment of the building process are widely used. A lot of biochemical products will be used in the renovation of the building which contains the harmful substances such as formaldehyde and hydrogen cyanide. So, we need to test them to ensure the health of our lives.
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