The Bio-safety Pass Box is a device used in laboratory or medical environments to control the transfer of items between areas of different biological safety levels by establishing a physical barrier, preventing contamination of clean areas. The interior of the pass box is usually equipped with disinfection facilities, such as ultraviolet disinfection lamps or chemical disinfectants, to disinfect items and ensure biosafety during the transfer process. Furthermore, some advanced pass boxes are equipped with VHP (vaporized hydrogen peroxide) disinfection ports, which can be connected to a VHP generator for more thorough sterilization. VHP is an effective disinfection method that produces a hydrogen peroxide mist, thoroughly killing a wide range of microorganisms, including bacteria, viruses, fungi, and spores. This design allows the pass box to efficiently sterilize transported objects without opening the door, making it very suitable for laboratories and production environments with high biological safety level requirements.