How to install the manhole after the ceiling?

Update:Jan 16,2023
Summary:The method of installing the inspection port after the ceiling is as follows: open an opening on the ceiling corresponding to the inspection port and ......
The method of installing the inspection port after the ceiling is as follows: open an opening on the ceiling corresponding to the inspection port and fix it on the inspection port with a gong wire.
If the aluminum gusset ceiling is installed, there is no need to add an inspection port, because the aluminum gusset of the aluminum gusset ceiling can be stopped by suction cups, and the space after stopping is relatively large.
Of course, if it is necessary to leave one.
If there is a mouth, you can also add a relatively large keel of the aluminum gusset plate, and then install a relatively accessible decoration mouth of the aluminum gusset plate in the middle.