Pass Box is not only a window, but also has the function of isolation. Transfer window is a kind of auxiliary equipment of clean room, mainly used for transferring small items between clean area and clean area, non-clean area and clean area. 

As a critical environment in the medical and pharmaceutical industries, the cleanliness of cleanrooms is directly related to product quality and safety. However, the greatest source of contamination in Cleanrooms often comes from the users themselves, especially microorganisms shed from the skin. These microorganisms can be spread through the airflow and pose a threat to the clean environment. Therefore, controlling microbial contamination and taking effective disinfection measures are the core tasks of cleanroom management.

The Air Handing Unit serves as equipment which controls temperature while also managing humidity and ventilates the air through quality enhancement. It combines the functions of an air handling unit, processing air through components such as fan regulators, filters and heating/cooling coils.

A biomedical clean room is a Clean Room where airborne microorganisms are the main object of control. It is mainly used in pharmaceuticals, sterile animal breeding, Hospital Operating Rooms, burn wards, leukemia rooms, food production, and advanced cosmetic production.