1. Adopting built-in small door structure, avoiding the influence of external air on the microclimate after opening the door, it can quickly return to the test point and meet the requirements of the latest standards. 2. Equipped with automatic water supply system, and can continuously weigh the moisture permeability cup automatically, which is more suitable for long time testing requirements and avoids the tediousness of manual measurement and the testing error caused by manual measurement; 3. Adopting the technology of system structure isolation and automatic switching cycle to solve the influence of vibration of structural parts on the weighing system; 4. Adding the functions of judging the weighing error at the end of the last two weighing sessions and setting the interval between the weighing session, which will automatically judge and produce the result after setting the requirements; 5. The whole machine will be able to meet the requirement of the latest standard. The whole machine continues the traditional classic principle design, instead of adopting dry and wet air mixing technology and ultrasonic humidifying technology, which is more suitable for textile moisture permeability testing requirements. 6. Adopting imported high-precision weighing system to ensure the accuracy and stability of the test data; 7. Adopting imported refrigeration components to ensure the long-term stable operation of the system, and a wider range of applicable environments; 8. Adopting imported temperature and humidity sensors to ensure the accuracy and stability of the temperature and humidity in the test room; 9. Compact and exquisite structure, friendly and practical operation interface.