2. The bulletin board is the place where the property management office issues notices. Owners and residents often pay attention to this location, forming the advantage of active viewing.
3. The bulletin board is installed between elevators or beside elevators. Owners and residents must wait for the elevator in the elevator hall, and the waiting time of the elevator is generally more than 120 seconds. Watching bulletin boards and advertisements has become the best choice. This is the advantage of watching advertisements passively.