Wall Paper Holder Office Rack Organizer PP material quality, health, environmental protection, non-toxic, odorless, safe to use Carefully wipe the installation of the stains, moisture, grease, glue and then tear compartment, directly adhered to. Suitable for installation in other materials of various smooth surface tile, stainless steel, glass, washing machines, metallic paint. If the wall can not reach the requirements of smooth, can be fixed with screws drilling.