How should the permanent warning notice be attached to the sauna room?

The permanent warning notice should be attached to the sauna room mechanically. This method ensures that the notice is secure and not easily removed, providing consistent visibility and compliance with safety standards. Mechanical attachment, such as using screws or brackets, guarantees that the notice remains in place, even in a high-humidity environment like a sauna, where adhesive solutions might fail over time due to moisture degradation. Additionally, a mechanically attached notice can withstand temperature fluctuations without risk of detachment, making it the ideal choice for safety communications in such a unique setting.