... warping;3. Durable,firm because of its high density,high sound absorption;4. No hazardous chemicals, ... C;8. Convenient for process,easy to install,clean,clean and combine with other products,low maintenance cost ... .No cracks and no deformation,easy to clean and maintain and conserve,to save maintenance ... sets/40HQ 9.Pictures all designs high quality interior wpc door for hotel, house,office, shoocl ...