Abstract: The present disclosure discloses a telescopic aluminum rod comprising at least two nested aluminum tubes and except the innermost aluminum tube, the rear ends of the rest aluminum tubes are respectively connected with a sleeve; each sleeve is internally provided with an accommodating cavity in which a locking device is arranged; the locking device comprises a pressing buckle which is longitudinally movably mounted in the accommodating cavity and the upper end face of the pressing buckle protrudes out of the sleeve through an opening formed on the sleeve, a bent plate of which the rear end abuts against the lower end face of the pressing buckle, and the middle is clamped inside the accommodating cavity.

Abstract: Exemplary embodiments of a floating pool dispenser are described. In one embodiment, a floating pool dispenser includes an outer assembly, an inner assembly, an end cover, and a lid. The inner assembly contains chemicals to be dissolved in a pool. The inner assembly moves vertically relative to the outer assembly in response to the continuous dissolving of chemicals.

Abstract: Exemplary embodiments of a floating pool dispenser are described. In one embodiment, a floating pool dispenser includes an outer assembly, an inner assembly, an end cover, and a lid. The inner assembly contains chemicals to be dissolved in a pool. The inner assembly moves vertically relative to the outer assembly in response to the continuous dissolving of chemicals.

Abstract: The present disclosure discloses a pool brush including a brush frame, a handle and a plurality of rows, of bristles. Each row of the plurality of rows of bristles includes a vertical row of bristles and two tilted rows of bristles arranged on the two sides of the vertical row of bristles, and the angle between the axial line of the outermost bristle in the tilted row of bristles and the axial line of each bristle in the vertical row of bristles is no less than 90 degrees.