Installation sites: Smooth surface (tile, glass, graite, stainless steel, styrofoa_m plates and so on. No nails, No holes at wall.
Applied in kitchen, washroom, bedroom, wardrobe and so on.
Usage: Clean the surface of the wall with a dry cloth, then put the suction cup hardly until it sucks the surface. Loaded booster board, tightened up plastic triangle, put a small iron.