Add some pictures of the clean booth.
The first is the overall picture of the clean booth, from this picture you can see the three different parts Yuhang mentioned, the clean level increase from the closest to the furtherst.
The second and the third pictures was where we put the clean suits and gloves in the first clean booth, we are going to add another drawers next to the present one.
The fourth one is the shelf we put in the middle clean booth.
The last picture is the tube between the bench clean booth and the PR tank. We cut the wall of the clean booth with a cross-cutting from inside, the tube is fixed on the view port with a metal ring. Between the tube and the clean booth, we didn't put anything.