A pair of cutting jaws are provided for a hydraulic or electric pressing tool. Accordingly, the present invention discloses a general purpose cleaning composition that is formed by emulsifying t-butyl acetate with water. The controlling end is operable to move a driving seat on a wheel seat to a braking position along a straight path. The aggregated information is updated to reflect the set having the new message, and the function of the set having the new message is determined and reported using the updated aggregated information.