Abstract: A supported metallocene catalyst includes a carrier and a metallocene component. The carrier includes an inorganic oxide particle and an alkyl aluminoxane material. The inorganic oxide particle includes at least one inorganic oxide compound selected from the group consisting of an oxide of Group 3A and an oxide of Group 4A. The alkyl aluminoxane material includes an alkyl aluminoxane compound and an alkyl aluminum compound that is present in amount ranging from greater than 0.01 wt % to less than 14 wt % base on 100 wt % of the alkyl aluminoxane material. The metallocene component is supported on the carrier, and includes one of a metallocene compound containing a metal from Group 3B, a metallocene compound containing a metal from Group 4B, and a combination thereof. A method for preparing the supported metallocene catalyst and a method for preparing polyolefin using the supported metallocene catalyst are also disclosed.

Abstract: An around-view camera device includes a camera body, two around-view lenses, and a counterweight piece. The camera body includes two openings, a casing, and a circuit board, where the two openings are respectively provided on two opposite sides of the casing, and the circuit board is disposed within the casing. The two around-view lenses are respectively accommodated within the two openings of the camera body and are separately electrically connected to the circuit board. The counterweight piece is disposed on a side, different from sides of the two around-view lenses, of the casing or the circuit board far away from a center of gravity of the camera body.

Abstract: An around-view camera device includes a camera body, two around-view lenses, and a counterweight piece. The camera body includes two openings, a casing, and a circuit board, where the two openings are respectively provided on two opposite sides of the casing, and the circuit board is disposed within the casing. The two around-view lenses are respectively accommodated within the two openings of the camera body and are separately electrically connected to the circuit board. The counterweight piece is disposed on a side, different from sides of the two around-view lenses, of the casing or the circuit board far away from a center of gravity of the camera body.

Abstract: The massage apparatus includes a casing having a bottom and a top with an elongated opening formed through it. An elongated support is provided on the top of the casing in the direction of the elongated opening. A pair of spaced upright rods is pivotally mounted on the bottom of the casing. An inverted T-shaped frame includes two lateral arms pivotally mounted to upper ends of the upright rods and an intermediate arm upwardly extending from the two lateral arms and through the elongated opening of the top to connect with the support. A driving unit provided in the casing moves the upright rods to swing about the pivot point within a predetermined angle when the driving unit is actuated.