| http://www.w3.org/ns/prov#value | - As the support for an under sheet, e.g., a metal plate, a resin sheet, and a composite sheet of a metal and a resin are used, preferably a metal sheet such as an aluminum plate, a zinc plate, a titanium plate, and a stainless steel plate, a bimetallic sheet such as a copper-aluminum plate, a copper-stainless steel plate, and a chromium-copper plate, a trimetallic sheet such as a chromium-copper-al
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