| http://www.w3.org/ns/prov#value | - The common enamel frit composition used in the present invention is not particularly limited so long as it comprises a component selected from the group consisting of SiO2, B2 O3, Al2 O3, CaO, MgO, Na2 O, K2 O, Li2 O, BaO, ZnO, TiO2, ZrO2, SbO, PbO, F2 and the like, and any suitable composition may be used.
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