An exhaust gas treatment device includes a housing, a fragile element disposed within the housing, and a mounting mat disposed between the fragile element and the housing for maintaining the positioning of the fragile element, absorbing mechanical shock, and providing thermal insulation. First provided are a first lead layer, and a pinned layer. The two heated bases are attached onto external sides of the two heat transmitting sections of the vapor chamber respectively, and the two condensing sections of the vapor chamber are attached to the internal periphery of the top of the lamp guard. The threaded bolt is inserted into the cylinder. The last polarity inversion pulses at the last cycles in each of vertical blanking intervals are deleted. The automatic action may also comprise the setting of a property relating to formatting or positioning of the object in response to a user-initiated action.