... , holes or glue,No nails or hammer,No damage to the surface of tiles5, Super-powered suction &Reusable6, Super-powered suction ... is 7.5 kilograms8, We have applied and registered for the industrial design and structural design from China Patent Bureau(CPB ... .2, Step Two: Press Part A of the suction cup and expel the air out of the suction cup3, Step Three: Rotate Part B ...