Suction product can be use on Grannite, stainless steel, tiles, glass etc. Must be smooth surface. Customer may purchase the suction stickers which act as a barrier between suction and surface for better suction. suction sticker can be used on unsmooth surface/tiles/glasses/wood etc. 
Wall Suction Hook

Round Suction Stickers 8 Pieces Set
to purchase the stickers please go to this page
http://list.qoo10.sg/GMKT.INC/Goods/Goods.aspx?goodscode=419256060