... has been developed for subway,school,elevator lorry,kindergarten wall,shopping hall,library,airport,restaurants,hospital,etc MaintenanceGIGA interior wall cladding ... surface,so please follow the instuction to clean and maintain it.Do not put things of high temperature on the surface ... there is any stubborn stain ,you could apply detergent to it ,dry it which soft cloth in 15 minutes. For more iformation ...