Three comprehensive Test Chamber mainly for aerospace, aviation, petroleum, chemical, electronics, communications and other scientific research and production units to provide temperature and humidity change environment, at the same time in the electric vibration stress on the test box, for the user for the machine (or parts), electrical appliances, instruments, materials, temperature, vibration comprehensive stress screening test, in order to assess the adaptability of the test article or to evaluate the behavior of the test article. Compared with the effect of a single factor, it can more truly reflect the adaptability of electrical and electronic products in the process of transportation and actual use to the temperature and humidity and vibration composite environment changes, and expose the defects of products, which is an essential and important test means for the whole process of new product development, prototype test and product qualification identification test.