This test chamber provides a simulated environment of high temperature, low temperature, high humidity and low humidity to detect the material and strength of rubber, plastic, electronic products before and after testing. The machine can also simulate the container environment to detect the fading and shrinkage of rubber and plastic under high temperature and high humidity. Test the heat resistance, cold resistance, dry resistance and humidity resistance of various materials. It is suitable for quality control testing of factories in electronics, electrical appliances, batteries, universities, research institutes, inspection and quarantine bureaus, paper products, food, vehicles, auto parts, metals, chemicals, building materials and other industries.