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Millia suction head General vacuum cleaner have a lot of suction head, that is designed for suck different corners, the tip of the vacuum cleaner can not transform into a slit-small gap on, only can change the suction head to Into the gap, that is not convience.
But this head tip by hinge structure, downward pressure widens lift it away into the discoid, up light lift variable bounce into a tube, we can solve the problem of absorption between a large area or a slit.