1. The round inner box, the stainless steel round test inner box structure, conforms to the industrial safety container standard, and can prevent dew condensation and dripping water during the test. 2. Circular lining, stainless steel circular lining design, can avoid the latent heat of steam directly impacting the test sample. 3. Precise design, good air tightness, low water consumption, each time adding water can last 200h. 4. Automatic access control, round door automatic temperature and pressure detection, safety access control lock control, patented safety door handle design of high pressure cooking aging tester, when there is more than normal pressure in the box, the testers will be protected by back pressure. 5. Patented packing, when the pressure inside the box is higher, the packing will have a back pressure which will make it more closely combined with the box body. The high-pressure cooking aging tester is completely different from the traditional extrusion type, which can prolong the packing life. 6. The vacuum action before the start of the experiment can extract the air in the original box and inhale the new air filtered by the filter core (partical<1micorn). To ensure the purity of the box. 7. Critical point LIMIT mode automatic safety protection, abnormal cause and fault indicator display.1. Inner box size: ∮350 mm x L400 mm, round test box 2. Temperature range: +105℃～+132℃. (143℃ is a special design, please specify when ordering). 3. Temperature fluctuation: ±0.5℃. 4. Temperature uniformity: ±2℃. 5. Humidity range: 100%R.H saturated steam. 6. Humidity fluctuation: ±1.5%R.H. 7. Humidity uniformity: ±3.0%R.H. 8. Pressure range: (1). Relative pressure: +0 ~ 2kg/cm2. (Production pressure range: +0 ~ 3kg/cm2). (2). Absolute pressure: 1.0kg/cm2 ~ 3.0kg/cm2. (3). Safe pressure capacity: 4kg/cm2 = 1 ambient atmospheric pressure + 3kg/cm2.  9. Circulation method: natural convection circulation of water vapor. 10. Measurement time setting: 0 ~ 999 Hr. 11. Pressurization time: 0.00kg/cm2 ~ 2.00kg/cm2 about 45 minutes. 12. Heating time: Non-linear no-load within about 35 minutes from normal temperature to +132°C. 13. The temperature change rate is the average air temperature change rate, not the product temperature change rate.