| http://www.w3.org/ns/prov#value | - Specifically, a reflective film made of, for example, Al, Ag, Au or an alloy made mainly of these metals and the like is formed on a surface of a rigid substrate (which is not required to have a light-transmitting property), such as glass or resin, by vapor deposition, sputtering, ion plating, or any other film-forming method, whereby a substrate having thereon the reflective film is obtained.
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