The implant has an annularly bent base, whereby the imagined surface enclosed by the base is bent. First, an under-ball-metallurgy layer is formed on the active surface of the wafer. The flexible display screen and flexible keyboard may be expanded from the housing when the flexible components are utilized by a user. A lower region of the cabinet is pivotably supported on the base frame via a hinge, such that the cabinet is capable of being set in a sideways fallen state, in which the commodity accommodating section is exposed. A plurality of wheels are operatively coupled to the frame to allow the frame to be easily transported and a motor is operatively coupled to the sweeping mechanism to rotate the sweeping mechanism, the motor being operatively coupled to at least one of the upper and lower conveyor axes to rotate the conveyor. Software on an external computer communicates with the micro, allowing the user to modify any of the controller parameters.