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The chair legs will make the floor worn a certain degree when we move it. We feel upset for the noise made by chair.
In order to solve the problem of weared floor caused by moving it,we make a design on chair legs.We want to install rollers on 4 chair legs so that when we moving the chair it can't wear the floor.While we sitting the roller of chair will put away because of the the weight of people.Therefore,it never affects normal use.