Overview: Pass box is a kind of auxiliary equipment for clean room. It is mainly used for the transfer of small items between clean area to another clean area, between clean area and non-clean area, to reduce the number of times the clean room is opened and pollute the clean room. Reduce to a minimum. The transfer window is made of stainless steel and is smooth and smooth. The double doors are interlocked to each other to effectively prevent cross-contamination. They are equipped with electronic or mechanical interlocking devices and equipped with ultraviolet germicidal lamps.