A clad layer is provided as a multilayer structure made of an alternate laminate of 20 layers of Al0. The universal switching power supply achieves a ratio between the highest voltage and lowest voltage of at least 27. The first side wall defines a locating hole therein. Y1 and Y2 each independently represent a thiocyanate group or isothiocyanate group. This feature is advantageous because it allows a liquefied gas container to be filled to a level above the second end of the body of the unit without the problem of dispensing liquefied gas.