Guangzhou Shounou Scientific Instrument Co., Ltd. SN-HW programmable constant temperature and humidity testing machine can simulate testing conditions in different environments such as high temperature and high humidity/high temperature and low humidity/low temperature and high humidity/low temperature and low humidity. It is widely used in aerospace, military, electronics, Electrical appliances, petroleum, chemicals, coatings, plastics, postal and telecommunications, medical pharmaceuticals, universities, scientific research units and other industries conduct environmental reliability tests on products with respect to temperature and humidity resistance.