The present invention relates to metal surfaces having thereon an ultrathin corrosion-resistant film, thereby rendering the metal surfaces corrosion-resistant. We can get the corresponding second-type high temperature absorption heat pump based on the second-type low temperature absorption heat pump as following ways. A second bit pattern is stored to the plurality of memory cells by applying a mask to selectively write only those cells of said plurality corresponding to different bit values between the first and second bit patterns. The termination portion may be provided with an opening aligned with one of the notches of the clip so that two drain wires of the cable may be oriented above the signal wires of the cables in similar positions to impose a measure of mechanical uniformity on the termination.