Abstract: A notebook computer includes a transparent main member case and a transparent display module case respectively formed of a front cover shell and a back cover shell for accommodating and protecting the main member and display module of a notebook computer. The front cover shell has angled peripheral flanges extending around three of the four sides thereof for covering the periphery of the main member or display module of the notebook computer to hold the main member or display module inside the respective case in perfect fitness.

Abstract: A dusting brush includes a brush holder, a sliding sleeve slidably mounted on the brush holder, two symmetrical ornament shells mounted on the sliding sleeve to move therewith, and a plurality of bristles mounted on the brush holder. Thus, the dusting brush can be operated easily and conveniently, thereby facilitating the user operating the dusting brush. In addition, the bristles are fully hidden in the sliding sleeve when not in use, thereby enhancing the aesthetic quality of the dusting brush.

Abstract: A dusting brush includes a brush holder, a sliding sleeve slidably mounted on the brush holder, two symmetrical ornament shells mounted on the sliding sleeve to move therewith, and a plurality of bristles mounted on the brush holder. Thus, the dusting brush can be operated easily and conveniently, thereby facilitating the user operating the dusting brush. In addition, the bristles are fully hidden in the sliding sleeve when not in use, thereby enhancing the aesthetic quality of the dusting brush.