A method of producing a liquid container closure includes the acts of providing a cap and molding a cap liner on an interior surface of the cap and a grip portion on an exterior surface of the cap. Rotatable top securing brackets engage the top block-shaped corner fittings and rotatable bottom securing brackets engage the bottom block-shaped corner fittings. The recording layer is a magnetic film having magnetic anisotropy in a direction perpendicular to the film surface, and the magnetic film holds the recording magnetic domain formed therein. The bridge circuit 800 includes the first TFT T55, and the gate of the TFT T55 connects to the gate signal point Q, and the drain and the source of the TFT T55 respectively connects to the first circuit point K and the second circuit point P. The method of searching first splits the address into at least a first key and a second key, each key including a predetermined number of address bits.