Sucker is fixed by the atmospheric pressure at the wall? so the more stringent requirements of the wall must be absolutely smooth wall and do not leak before you can install? so we must pay attention to when buying check the location you want to install their own can I install the sucker. If you can not install wall mounted sucker? sucker can buy OUR assisted version? paste the wall sucker auxiliary plate? the suction cup mounted on the auxiliary board? will be solved. 

There are long-winded sentence: Sucker although the quality is very good? but the non-vacuum suction pump limited load-bearing capacity? please do not place heavy items.