1. The transfer window is a transfer channel for materials between areas of different cleanliness levels.

2. The door of the normal transfer window is closed. When the material is delivered, the transmitter first rings the doorbell.

When the other party answers, the door is opened again. After the material is sent in, the door is closed immediately, and the

receiver opens another door. After removing the material, close the door. It is strictly forbidden to open both doors at the same time.

3. After the operation of the transfer window, the cleaning work should be carried out and disinfected regularly.