This series of test chambers include the saturated steady state damp heat test chamber PCT and the unsaturated humidity pressure aging chamber HAST. The product meets the temperature range of+105 ℃~+162.5 ℃, the pressure range of 0.019~0.393 Mpa, and the UHAST (unbiased voltage)/BHAST (biased voltage) temperature, humidity, voltage and other stress tests.