The air shower pass box is designed based on the air shower. Its fan can quickly blow out air which is filtered through the HEPA filter, and the filtered  clean airflow can reach up to 20 m/s or more after spraying from the stainless steel spray nozzle, thus effectively and quickly removing the dust  particles attached to the surface of objects. The air can be recirculated through the primary-efficiency filter and then HEPA filter, realizing significant  filtration effect and high reusability.