| http://www.w3.org/ns/prov#value | - Spacer materials which can be preferably used in this case include inorganic materials such as silicon, gallium arsenide, manganese dioxide, titanium oxide and a laminate film of chromium oxide and metal chromium, and organic materials such as mixtures obtained by adding any of pigments and dyes based on carbon black, phthalocyanine, anthraquinone, monoazo, disazo, metal complex salt type monoazo,
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